The Mystery of Vault 666

The Mystery of Vault 666 is a single-stage quest . This quest is obtained from a quest clue, which can be found during an unrelated quest. After the dwellers return to the vault, the quest will be available in the overseer's office.
==Walkthrough==
==Dialogue==
Opening message	Dweller response 	Character response
Mu ha ha ha ha!
So! You have discovered my lair! Vault 666! I am...
El Diablo!
So tell me... Are you ready to burn?!	Put a sock in it, you second-rate supervillain!	Who you callin' second-rate?
Mu ha ha ha ha!
So! You have discovered my lair! Vault 666! I am...
El Diablo!
So tell me... Are you ready to burn?!	A hidden Vault... Why you little devil... 	You have no idea.
Mu ha ha ha ha!
So! You have discovered my lair! Vault 666! I am...
El Diablo!
So tell me... Are you ready to burn?!	Go to... Well, you know! 	I'll meet you there!
Mu ha ha ha ha!
So! You have discovered my lair! Vault 666! I am...
El Diablo!
So tell me... Are you ready to burn?!	Really? Vault 666? El Diablo? 	Everyone's a critic.
==Quest stages==
==Gallery==
FoS The Mystery of Vault 666 card.jpg|Requirements, objective, rewards and description
FoS The Mystery of Vault 666 rewards.jpg|Rewards
Category:Fallout Shelter quests
ru:Тайна Убежища 666
uk:Таємниця Сховища 666