The Mystery of Vault 31

The Mystery of Vault 31 is a limited time multi-stage questline . It consists of five sequential quests. This page serves as an overview for these quests.
Quest name 	Long description 	Quest objective 	Short description 	Requirements 	Rewards
Halloween (Non)Fiction	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!	Learn more about Vault 31 at the ruined library.	Learn more about Vault 31 at the ruined library. 	Level 103+ DAM weapons	Ghost costume400 caps
Go West 	The library caretaker told me someone named Herb Vest might know more about Vault 31. I can track him down at the old candy factory. 	Search for Herb Vest at the old candy factory. 	Seek advice about Vault 31 from Herb Vest. 	Level 124+ DAM weapons	Rare weaponCommon outfit500 caps
Days Gone Bye 	Herb Vest told me that people who go to Vault 31 end up missing. I'm going to head to Vault-Tec's offices to learn more about the Vault's past. 	Track down information about Vault 31's past. 	Search the Vault-Tec offices for information about Vault 31.	Level 134+ DAM weapons	Legendary junk600 caps
Mask Hysteria 	In order to scare the Raiders away from Vault 31, a helpful traveler suggested getting Ghost Costumes from an old factory nearby. 	Get the Ghost Costumes from the factory. 	Get the Ghost Costumes from the old costume factory. 	Level 145+ DAM weapons	Ghost costume x2
Scare Tactics 	With the Ghost Costumes in hand, it's time to head out to Vault 31 and confront the Raiders there once and for all! 	Confront the Raiders at Vault 31. 	Confront the Raiders at Vault 31. 	Level 15Ghost costume 	Mr. Handy boxRare outfitRare outfit recipe
==Gallery==
FoS The Mystery of Vault 31 all.jpg|Requirements, objective, rewards and description
Category:Fallout Shelter multi-stage questlines
Category:Fallout Shelter limited time quests
es:El misterio del Refugio 31
ru:Тайна Убежища 31