Halloween (Non)Fiction

 is a repeatable quest in Fallout Shelter.

Synopsis
''As Halloween approaches, the story of Vault 31 and its strange past is being told once again. But is the Vault really haunted, or is something else to blame? It’s up to you to solve... The Mystery of Vault 31!''

Objectives
Learn more about Vault 31 at the ruined library.

Dialogue

 * Meat is murder... The good kind. (_RaiderLine_1);
 * Come on, this meat can't be beat! (_RaiderLine_2);
 * Coming here might have been a mis-steak. (_RaiderLine_3);
 * No, but ask Herb Vest at the old candy factory. And here, take my costume. (_Conversation_1_NPCEnd_1);
 * Happy Halloween! I'm Howard Phillips, the caretaker of this old library. (_Conversation_1_NPCStart_1);
 * Thank you for taking care of our pest problem. (_Conversation_1_NPCStart_2);
 * How can I help you in return? (_Conversation_1_NPCStart_3);
 * Do you know anything about Vault 31? (_Conversation_1_Team_1);