diff --git a/app/models/QuesttypeModel.inc b/app/models/QuesttypeModel.inc
index 5829dcf3..57f51c30 100644
--- a/app/models/QuesttypeModel.inc
+++ b/app/models/QuesttypeModel.inc
@@ -34,6 +34,14 @@
         public abstract function copyQuest($userId, $sourceQuestId, $targetQuestId, $seminaryMediaIds);
 
 
+        /**
+         * Delete a Quest.
+         * 
+         * @param   int $questId    ID of Quest to delete
+         */
+        public abstract function deleteQuest($questId);
+
+
         /**
          * Load a Model.
          *
diff --git a/db/create.sql b/db/create.sql
index b93ba39f..5c402dcf 100644
--- a/db/create.sql
+++ b/db/create.sql
@@ -218,7 +218,7 @@ CREATE TABLE `avatarpictures` (
   PRIMARY KEY (`seminarymedia_id`),
   KEY `created_user_id` (`created_user_id`),
   CONSTRAINT `avatarpictures_ibfk_2` FOREIGN KEY (`created_user_id`) REFERENCES `users` (`id`),
-  CONSTRAINT `avatarpictures_ibfk_3` FOREIGN KEY (`seminarymedia_id`) REFERENCES `seminarymedia` (`id`)
+  CONSTRAINT `avatarpictures_ibfk_3` FOREIGN KEY (`seminarymedia_id`) REFERENCES `seminarymedia` (`id`) ON DELETE CASCADE ON UPDATE CASCADE
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 /*!40101 SET character_set_client = @saved_cs_client */;
 
@@ -847,8 +847,8 @@ CREATE TABLE `questgroups_questgroupshierarchy` (
   KEY `parent_questgoup_id` (`parent_questgroup_id`),
   KEY `questgroupshierarchy_id` (`questgroupshierarchy_id`),
   CONSTRAINT `questgroups_questgroupshierarchy_ibfk_1` FOREIGN KEY (`questgroup_id`) REFERENCES `questgroups` (`id`) ON DELETE CASCADE ON UPDATE CASCADE,
-  CONSTRAINT `questgroups_questgroupshierarchy_ibfk_2` FOREIGN KEY (`questgroupshierarchy_id`) REFERENCES `questgroupshierarchy` (`id`),
-  CONSTRAINT `questgroups_questgroupshierarchy_ibfk_3` FOREIGN KEY (`parent_questgroup_id`) REFERENCES `questgroups` (`id`)
+  CONSTRAINT `questgroups_questgroupshierarchy_ibfk_2` FOREIGN KEY (`questgroupshierarchy_id`) REFERENCES `questgroupshierarchy` (`id`) ON DELETE CASCADE ON UPDATE CASCADE,
+  CONSTRAINT `questgroups_questgroupshierarchy_ibfk_3` FOREIGN KEY (`parent_questgroup_id`) REFERENCES `questgroups` (`id`) ON DELETE CASCADE ON UPDATE CASCADE
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 /*!40101 SET character_set_client = @saved_cs_client */;
 
@@ -865,8 +865,8 @@ CREATE TABLE `questgroups_questtexts` (
   `entry_text` text COLLATE utf8mb4_unicode_ci NOT NULL,
   PRIMARY KEY (`questgroup_id`,`questtext_id`),
   KEY `questtext_id` (`questtext_id`),
-  CONSTRAINT `questgroups_questtexts_ibfk_1` FOREIGN KEY (`questgroup_id`) REFERENCES `questgroups` (`id`),
-  CONSTRAINT `questgroups_questtexts_ibfk_2` FOREIGN KEY (`questtext_id`) REFERENCES `questtexts` (`id`)
+  CONSTRAINT `questgroups_questtexts_ibfk_1` FOREIGN KEY (`questgroup_id`) REFERENCES `questgroups` (`id`) ON DELETE CASCADE ON UPDATE CASCADE,
+  CONSTRAINT `questgroups_questtexts_ibfk_2` FOREIGN KEY (`questtext_id`) REFERENCES `questtexts` (`id`) ON DELETE CASCADE ON UPDATE CASCADE
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 /*!40101 SET character_set_client = @saved_cs_client */;
 
diff --git a/models/AchievementsModel.inc b/models/AchievementsModel.inc
index aafae4b7..5b2a05bc 100644
--- a/models/AchievementsModel.inc
+++ b/models/AchievementsModel.inc
@@ -1402,6 +1402,18 @@
             $this->db->setAutocommit(true);
         }
 
+
+        /**
+         * Delete all Achievements of a Seminary.
+         *
+         * @param   int $seminaryId ID of Seminary to delete Achievements of
+         */
+        public function deleteAchievementsOfSeminary($seminaryId)
+        {
+            // Delete Achievements
+            $this->db->query('DELETE FROM achievements WHERE seminary_id = ?', 'i', $seminaryId);
+        }
+
     }
 
 ?>
diff --git a/models/AvatarsModel.inc b/models/AvatarsModel.inc
index 9abd09b3..493eb88e 100644
--- a/models/AvatarsModel.inc
+++ b/models/AvatarsModel.inc
@@ -218,6 +218,25 @@
             }
         }
 
+
+        /**
+         * Delete Avatars.
+         *
+         * @param   array   $charactertypeIds   List of Charactertype-IDs to delete Avatars of
+         * @param   array   $xplevelIds         List of XP-level-IDs to delete Avatars of
+         */
+        public function deleteAvatars($charactertypeIds, $xplevelIds)
+        {
+            $this->db->query(
+                sprintf(
+                    'DELETE FROM avatars '.
+                    'WHERE charactertype_id IN (%s) OR xplevel_id IN (%s)',
+                    implode(',', $charactertypeIds),
+                    implode(',', $xplevelIds)
+                )
+            );
+        }
+
     }
 
 ?>
diff --git a/models/CharactergroupsModel.inc b/models/CharactergroupsModel.inc
index bcca2802..1b36324a 100644
--- a/models/CharactergroupsModel.inc
+++ b/models/CharactergroupsModel.inc
@@ -20,6 +20,12 @@
      */
     class CharactergroupsModel extends \hhu\z\Model
     {
+        /**
+         * Required models
+         *
+         * @var array
+         */
+        public $models = array('charactergroupsquests');
 
 
 
@@ -225,6 +231,31 @@
         }
 
 
+        /**
+         * Delete all Character groups-groups of a Seminary.
+         *
+         * @param   int $seminaryId ID of Seminary to delete Character groups-groups of
+         */
+        public function deleteGroupsgroupsOfSeminary($seminaryId)
+        {
+            // Get Groupsgroups
+            $charactergroupsgroups = $this->getGroupsroupsForSeminary($seminaryId);
+
+            // Delete each Groupsgroup
+            foreach($charactergroupsgroups as $groupsgroup)
+            {
+                // Delete Groups
+                $this->deleteGroupsOfGroupsgroup($groupsgroup['id']);
+
+                // Delete Groupsquests
+                $this->Charactergroupsquests->deleteQuestsOfGroupsgroup($groupsgroup['id']);
+
+                // Delete Groupsgroup
+                $this->db->query('DELETE FROM charactergroupsgroups WHERE seminary_id = ?', 'i', $seminaryId);
+            }
+        }
+
+
         /**
          * Get Character groups for a Character groups-group.
          *
@@ -475,6 +506,17 @@
         }
 
 
+        /**
+         * Delete all Character groups of a groups-group.
+         *
+         * @param   int $groupsgroupId  ID of Character groups-group to delete groups of
+         */
+        public function deleteGroupsOfGroupsgroup($groupsgroupId)
+        {
+            $this->db->query('DELETE FROM charactergroups WHERE charactergroupsgroup_id = ?', 'i', $groupsgroupId);
+        }
+
+
         /**
          * Get the rank of a XP-value of a Character.
          *
diff --git a/models/CharactergroupsquestsModel.inc b/models/CharactergroupsquestsModel.inc
index 32b9cafa..61de9715 100644
--- a/models/CharactergroupsquestsModel.inc
+++ b/models/CharactergroupsquestsModel.inc
@@ -437,6 +437,17 @@
         }
 
 
+        /**
+         * Delete all Character groups Quests of a Character groups-group.
+         *
+         * @param   int $groupsgroupId  ID of Character groups-group to delete Quests of
+         */
+        public function deleteQuestsOfGroupsgroup($groupsgroupId)
+        {
+            $this->db->query('DELETE FROM charactergroupsquests WHERE charactergroupsgroup_id = ?', 'i', $groupsgroupId);
+        }
+
+
     }
 
 ?>
diff --git a/models/CharactertypesModel.inc b/models/CharactertypesModel.inc
index eb812864..039db838 100644
--- a/models/CharactertypesModel.inc
+++ b/models/CharactertypesModel.inc
@@ -247,6 +247,17 @@
             $this->db->query('DELETE FROM charactertypes WHERE id = ?', 'i', $charactertypeId);
         }
 
+
+        /**
+         * Delete all Charactertypes of a Seminary.
+         *
+         * @param   int $seminaryId ID of Seminary to delete Charactertypes of
+         */
+        public function deleteCharactertypesOfSeminary($seminaryId)
+        {
+            $this->db->query('DELETE FROM charactertypes WHERE seminary_id = ?', 'i', $seminaryId);
+        }
+
     }
 
 ?>
diff --git a/models/MapModel.inc b/models/MapModel.inc
index ff7393b5..2bd4e28e 100644
--- a/models/MapModel.inc
+++ b/models/MapModel.inc
@@ -115,7 +115,7 @@
         public function deleteMapOfSeminary($seminaryId)
         {
             // Get map
-            $map = $this->getMap($seminaryId);
+            $map = $this->getMapOfSeminary($seminaryId);
             if(is_null($map)) {
                 return;
             }
diff --git a/models/MediaModel.inc b/models/MediaModel.inc
index bb63c399..5ac31aea 100644
--- a/models/MediaModel.inc
+++ b/models/MediaModel.inc
@@ -200,6 +200,35 @@
         }
 
 
+        /**
+         * Delete all media of a Seminary.
+         *
+         * @param   int $seminaryId ID of Seminary to delete media of
+         */
+        public function deleteSeminaryMediaOfSeminary($seminaryId)
+        {
+            // Get all media from a Seminary
+            $seminaryMedia = $this->db->query(
+                'SELECT id '.
+                'FROM seminarymedia '.
+                'WHERE seminary_id = ?',
+                'i',
+                $seminaryId
+            );
+
+            // Delete each medium
+            foreach($seminaryMedia as &$medium)
+            {
+                // Delete file
+                $filename = ROOT.DS.\nre\configs\AppConfig::$dirs['seminarymedia'].DS.$medium['id'];
+                @unlink($filename);
+            }
+
+            // Delete database entries
+            $this->db->query('DELETE FROM seminarymedia WHERE seminary_id = ?', 'i', $seminaryId);
+        }
+
+
         /**
          * Create a new moodpic.
          *
diff --git a/models/QuestgroupsModel.inc b/models/QuestgroupsModel.inc
index f79e2031..9e659450 100644
--- a/models/QuestgroupsModel.inc
+++ b/models/QuestgroupsModel.inc
@@ -749,6 +749,28 @@
         }
 
 
+        /**
+         * Delete all Questgroups of a Seminary.
+         *
+         * @param   int $seminaryId ID of Seminary to delete Questgroups of
+         */
+        public function deleteQuestgroupsOfSeminary($seminaryId)
+        {
+            // Get Questgroups
+            $questgroups = $this->getQuestgroupsForSeminary($seminaryId);
+
+            // Delete each Questgroup
+            foreach($questgroups as &$questgroup)
+            {
+                // Delete Questgroup texts
+                $this->Questgrouptexts->deleteQuestgrouptexts($questgroup['id']);
+
+                // Delete Questgroup
+                $this->db->query('DELETE FROM questgroups WHERE id = ?', 'i', $questgroup['id']);
+            }
+        }
+
+
 
 
         /**
diff --git a/models/QuestgroupshierarchyModel.inc b/models/QuestgroupshierarchyModel.inc
index 16a8d326..5b18cf9c 100644
--- a/models/QuestgroupshierarchyModel.inc
+++ b/models/QuestgroupshierarchyModel.inc
@@ -339,6 +339,17 @@
         }
 
 
+        /**
+         * Delete complete Questgroupshierarchy of a Seminary.
+         * 
+         * @param   int $seminaryId ID of Seminary to delete Questgroupshierarchy of
+         */
+        public function deleteQuestgroupshierarchyOfSeminary($seminaryId)
+        {
+            $this->db->query('DELETE FROM questgroupshierarchy WHERE seminary_id = ?', 'i', $seminaryId);
+        }
+
+
 
 
         /**
diff --git a/models/QuestgrouptextsModel.inc b/models/QuestgrouptextsModel.inc
index 0ebb76b1..bfdb970a 100644
--- a/models/QuestgrouptextsModel.inc
+++ b/models/QuestgrouptextsModel.inc
@@ -146,6 +146,17 @@
             );
         }
 
+
+        /**
+         * Delete all Questgroup texts of a Questgroup.
+         *
+         * @param   int $questgroupId   ID of Questgroup to delete texts of
+         */
+        public function deleteQuestgrouptexts($questgroupId)
+        {
+            $this->db->query('DELETE FROM questgrouptexts WHERE questgroup_id = ?', 'i', $questgroupId);
+        }
+
     }
 
 ?>
diff --git a/models/QuestsModel.inc b/models/QuestsModel.inc
index 7a55a9fd..11eae68e 100644
--- a/models/QuestsModel.inc
+++ b/models/QuestsModel.inc
@@ -813,6 +813,42 @@
             $this->db->setAutocommit(true);
         }
 
+
+        /**
+         * Delete all Quests of a Seminary.
+         *
+         * @param   int $seminaryId ID of Seminary to delete all Quests of
+         */
+        public function deleteQuestsOfSeminary($seminaryId)
+        {
+            // Get Quests
+            $quests = $this->getQuestsForSeminary($seminaryId);
+
+            // Delete each Quest
+            foreach($quests as &$quest)
+            {
+                // Delete content
+                $questtype = $this->Questtypes->getQuesttypeById($quest['questtype_id']);
+                if(!is_null($questtype['classname']))
+                {
+                    // Load Questtype Model
+                    \hhu\z\models\QuesttypeModel::load($questtype['classname']);
+
+                    // Construct Questtype Model
+                    $questtypeModel = \hhu\z\models\QuesttypeModel::factory($questtype['classname']);
+
+                    // Delete content
+                    $questtypeModel->deleteQuest($quest['id']);
+                }
+
+                // Delete Quests texts
+                $this->Questtexts->deleteQuesttexts($quest['id']);
+
+                // Delete quest
+                $this->db->query('DELETE FROM quests WHERE id = ?', 'i', $quest['id']);
+            }
+        }
+
     }
 
 ?>
diff --git a/models/QuesttextsModel.inc b/models/QuesttextsModel.inc
index 950d9b7b..e818f421 100644
--- a/models/QuesttextsModel.inc
+++ b/models/QuesttextsModel.inc
@@ -384,6 +384,17 @@
             );
         }
 
+
+        /**
+         * Delete all Quest texts of a Quest.
+         *
+         * @param   int $questId    ID of Quest to delete all texts of
+         */
+        public function deleteQuesttexts($questId)
+        {
+            $this->db->query('DELETE FROM questtexts WHERE quest_id = ?', 'i', $questId);
+        }
+
     }
 
 ?>
diff --git a/models/QuesttopicsModel.inc b/models/QuesttopicsModel.inc
index ac906fb3..94de7913 100644
--- a/models/QuesttopicsModel.inc
+++ b/models/QuesttopicsModel.inc
@@ -470,6 +470,17 @@
             $this->db->query('DELETE FROM questsubtopics WHERE id = ?', 'i', $questtopicId);
         }
 
+
+        /**
+         * Delete all Questtopics of a Seminary.
+         *
+         * @param   int $seminaryId ID of Seminary to delete Questtopics of
+         */
+        public function deleteQuesttopicsOfSeminary($seminaryId)
+        {
+            $this->db->query('DELETE FROM questtopics WHERE seminary_id = ?', 'i', $seminaryId);
+        }
+
     }
 
 ?>
diff --git a/models/SeminariesModel.inc b/models/SeminariesModel.inc
index 53462668..20984de6 100644
--- a/models/SeminariesModel.inc
+++ b/models/SeminariesModel.inc
@@ -24,7 +24,7 @@
          *
          * @var array
          */
-        public $models = array('questgroupshierarchy', 'questgroups', 'quests', 'questtopics', 'media', 'charactertypes', 'xplevels', 'avatars', 'achievements', 'charactergroups', 'charactergroupsquests', 'seminarycharacterfields', 'map');
+        public $models = array('questgroupshierarchy', 'questgroups', 'quests', 'questtopics', 'media', 'characters', 'charactertypes', 'xplevels', 'avatars', 'achievements', 'charactergroups', 'charactergroupsquests', 'seminarycharacterfields', 'map', 'uploads');
 
 
 
@@ -470,13 +470,64 @@
 
         /**
          * Delete a seminary.
-         * TODO Delete media
          *
          * @param   int $seminaryId ID of the seminary to delete
          */
         public function deleteSeminary($seminaryId)
         {
-            $this->db->query('DELETE FROM seminaries WHERE id = ?', 'i', $seminaryId);
+            $this->db->setAutocommit(false);
+            try {
+                // Map
+                $this->Map->deleteMapOfSeminary($seminaryId);
+
+                // Charactergroups content
+                $this->Charactergroups->deleteGroupsgroupsOfSeminary($seminaryId);
+
+                // Achievements
+                $this->Achievements->deleteAchievementsOfSeminary($seminaryId);
+
+                // Character content
+                // Delete Characters
+                $characters = $this->Characters->getCharactersForSeminary($seminaryId);
+                foreach($characters as &$character) {
+                    $this->Characters->deleteCharacter($character['id']);
+                }
+                // Delete Avatars
+                $charactertypes = $this->Charactertypes->getCharacterTypesForSeminary($seminaryId);
+                $charactertypeIds = array_map(function($type) { return $type['id']; }, $charactertypes);
+                $xplevels = $this->Xplevels->getXPLevelsForSeminary($seminaryId);
+                $xplevelIds = array_map(function($level) { return $level['id']; }, $xplevels);
+                $this->Avatars->deleteAvatars($charactertypeIds, $xplevelIds);
+                // Delete XP-levels
+                $this->Xplevels->deleteXPLevelsOfSeminary($seminaryId);
+                // Delete Charactertypes
+                $this->Charactertypes->deleteCharactertypesOfSeminary($seminaryId);
+
+                // Delete Quests content
+                // Delete Quest topics
+                $this->Questtopics->deleteQuesttopicsOfSeminary($seminaryId);
+                // Delete Quests
+                $this->Quests->deleteQuestsOfSeminary($seminaryId);
+                // Delete Questgroups
+                $this->Questgroups->deleteQuestgroupsOfSeminary($seminaryId);
+                // Delete Questgroupshierarchy
+                $this->Questgroupshierarchy->deleteQuestgroupshierarchyOfSeminary($seminaryId);
+
+                // Media
+                $this->Media->deleteSeminaryMediaOfSeminary($seminaryId);
+
+                // Uploads
+                $this->Uploads->deleteSeminaryUploadsOfSeminary($seminaryId);
+
+                // Delete Seminary
+                $this->db->query('DELETE FROM seminaries WHERE id = ?', 'i', $seminaryId);
+            }
+            catch(\Exception $e) {
+                $this->db->rollback();
+                $this->db->setAutocommit(true);
+                throw $e;
+            }
+            $this->db->setAutocommit(true);
         }
 
     }
diff --git a/models/UploadsModel.inc b/models/UploadsModel.inc
index 7a555659..2b7f2a2d 100644
--- a/models/UploadsModel.inc
+++ b/models/UploadsModel.inc
@@ -170,6 +170,35 @@
             $this->db->setAutocommit(true);
         }
 
+
+        /**
+         * Delete all Seminary uploads of a Seminary.
+         *
+         * @param   int $seminaryId ID of Seminary to delete all Uploads of
+         */
+        public function deleteSeminaryUploadsOfSeminary($seminaryId)
+        {
+            // Get all uploads from a Seminary
+            $seminaryUploads = $this->db->query(
+                'SELECT id, url '.
+                'FROM seminaryuploads '.
+                'WHERE seminary_id = ?',
+                'i',
+                $seminaryId
+            );
+
+            // Delete each upload
+            foreach($seminaryUploads as &$upload)
+            {
+                // Delete file
+                $filename = ROOT.DS.\nre\configs\AppConfig::$dirs['seminaryuploads'].DS.$upload['url'];
+                @unlink($filename);
+            }
+
+            // Delete database entries
+            $this->db->query('DELETE FROM seminaryuploads WHERE seminary_id = ?', 'i', $seminaryId);
+        }
+
     }
 
 ?>
diff --git a/models/XplevelsModel.inc b/models/XplevelsModel.inc
index 8f249dfe..8d657dd7 100644
--- a/models/XplevelsModel.inc
+++ b/models/XplevelsModel.inc
@@ -231,6 +231,17 @@
             $this->db->setAutocommit(true);
         }
 
+
+        /**
+         * Delete all XP-levels of a Seminary.
+         *
+         * @param   int $seminaryId ID of Seminary to delete XP-levels of
+         */
+        public function deleteXPLevelsOfSeminary($seminaryId)
+        {
+            $this->db->query('DELETE FROM xplevels WHERE seminary_id = ?', 'i', $seminaryId);
+        }
+
     }
 
 ?>
diff --git a/questtypes/bossfight/BossfightQuesttypeModel.inc b/questtypes/bossfight/BossfightQuesttypeModel.inc
index 36efafa7..76ff44fb 100644
--- a/questtypes/bossfight/BossfightQuesttypeModel.inc
+++ b/questtypes/bossfight/BossfightQuesttypeModel.inc
@@ -68,6 +68,17 @@
         }
 
 
+        /**
+         * Delete a Quest.
+         * 
+         * @param   int $questId    ID of Quest to delete
+         */
+        public function deleteQuest($questId)
+        {
+            $this->db->query('DELETE FROM questtypes_bossfight WHERE quest_id = ?', 'i', $questId);
+        }
+
+
         /**
          * Get a Boss-Fight.
          *
diff --git a/questtypes/choiceinput/ChoiceinputQuesttypeModel.inc b/questtypes/choiceinput/ChoiceinputQuesttypeModel.inc
index 20ad7988..cc34a1d0 100644
--- a/questtypes/choiceinput/ChoiceinputQuesttypeModel.inc
+++ b/questtypes/choiceinput/ChoiceinputQuesttypeModel.inc
@@ -97,6 +97,17 @@
         }
 
 
+        /**
+         * Delete a Quest.
+         * 
+         * @param   int $questId    ID of Quest to delete
+         */
+        public function deleteQuest($questId)
+        {
+            $this->db->query('DELETE FROM questtypes_choiceinput WHERE quest_id = ?', 'i', $questId);
+        }
+
+
         /**
          * Get choiceinput-text for a Quest.
          *
diff --git a/questtypes/crossword/CrosswordQuesttypeModel.inc b/questtypes/crossword/CrosswordQuesttypeModel.inc
index e223a553..8a55e6ae 100644
--- a/questtypes/crossword/CrosswordQuesttypeModel.inc
+++ b/questtypes/crossword/CrosswordQuesttypeModel.inc
@@ -47,6 +47,17 @@
         }
 
 
+        /**
+         * Delete a Quest.
+         * 
+         * @param   int $questId    ID of Quest to delete
+         */
+        public function deleteQuest($questId)
+        {
+            $this->db->query('DELETE FROM questtypes_crossword_words WHERE quest_id = ?', 'i', $questId);
+        }
+
+
         /**
          * Get all words for a crossword-Quest.
          *
diff --git a/questtypes/dragndrop/DragndropQuesttypeModel.inc b/questtypes/dragndrop/DragndropQuesttypeModel.inc
index 055dcc8d..d076711e 100644
--- a/questtypes/dragndrop/DragndropQuesttypeModel.inc
+++ b/questtypes/dragndrop/DragndropQuesttypeModel.inc
@@ -127,6 +127,16 @@
         }
 
 
+        /**
+         * Delete a Quest.
+         * 
+         * @param   int $questId    ID of Quest to delete
+         */
+        public function deleteQuest($questId)
+        {
+            $this->db->query('DELETE FROM questtypes_dragndrop WHERE quest_id = ?', 'i', $questId);
+        }
+
 
         /**
          * Create a new Drag&Drop field for a Quest.
diff --git a/questtypes/multiplechoice/MultiplechoiceQuesttypeModel.inc b/questtypes/multiplechoice/MultiplechoiceQuesttypeModel.inc
index 003e9161..dc5b4943 100644
--- a/questtypes/multiplechoice/MultiplechoiceQuesttypeModel.inc
+++ b/questtypes/multiplechoice/MultiplechoiceQuesttypeModel.inc
@@ -67,6 +67,17 @@
         }
 
 
+        /**
+         * Delete a Quest.
+         * 
+         * @param   int $questId    ID of Quest to delete
+         */
+        public function deleteQuest($questId)
+        {
+            $this->db->query('DELETE FROM questtypes_multiplechoice WHERE quest_id = ?', 'i', $questId);
+        }
+
+
         /**
          * Get the count of multiple choice questions for a Quest.
          *
diff --git a/questtypes/submit/SubmitQuesttypeModel.inc b/questtypes/submit/SubmitQuesttypeModel.inc
index 100a7000..b3b8f7bb 100644
--- a/questtypes/submit/SubmitQuesttypeModel.inc
+++ b/questtypes/submit/SubmitQuesttypeModel.inc
@@ -42,6 +42,17 @@
         }
 
 
+        /**
+         * Delete a Quest.
+         * 
+         * @param   int $questId    ID of Quest to delete
+         */
+        public function deleteQuest($questId)
+        {
+            $this->db->query('DELETE FROM questtypes_submit_characters WHERE quest_id = ?', 'i', $questId);
+        }
+
+
         /**
          * Save Character’s submitted upload.
          *
diff --git a/questtypes/textinput/TextinputQuesttypeModel.inc b/questtypes/textinput/TextinputQuesttypeModel.inc
index 59c41d1d..9d3fb8d8 100644
--- a/questtypes/textinput/TextinputQuesttypeModel.inc
+++ b/questtypes/textinput/TextinputQuesttypeModel.inc
@@ -59,6 +59,17 @@
         }
 
 
+        /**
+         * Delete a Quest.
+         * 
+         * @param   int $questId    ID of Quest to delete
+         */
+        public function deleteQuest($questId)
+        {
+            $this->db->query('DELETE FROM questtypes_textinput WHERE quest_id = ?', 'i', $questId);
+        }
+
+
         /**
          * Get textinput-text for a Quest.
          *