During the Credits
During the first 3 minutes of the credits of Black Mass, there are historic photos, documents, and archival footage of key events, places, and most of the real life people portrayed by the principal cast. There are no other extras during the remaining 4 minutes of the credits.
After the Credits
There is no stinger after the credits of Black Mass.
Songs During the Credits
Excerpts from OST by Tom Holkenborg (Junkie XL)
Special thanks to Jak for the stinger submission!