The Mystery Vault is a new feature in Mafia Wars, introduced on April 6, 2010. Players randomly receive word that they uncovered a Mystery Vault upon visiting their Mafia Wars Home page. In order to open the vault, you have to sign up with your email address and receive a link by email. Players that already signed up will also get a chance to find a vault.
Link to Hack the Vault[]
If you have trouble hacking the vault, this can be solved: Just copy+paste the text below into your browser and the vault will open.
http://facebook.mafiawars.com/mwfb/remote/html_server.php?xw_controller=mysteryvault&xw_action=award_mystery_vault&xw_city=1
Mystery Vault Loot[]
Pair of Trekker Boots
23
38
61
Royal White Elephant
34
48
82
Iron Bull
28
42
70
Tesla PD Gun
18
42
60
Guerilla Bodyguard
25
44
69