READ MORE: Johnny Depp Heading to Venice Film Festival for 'Black Mass' World Premiere Johnny Depp looks ready for his Oscar in the chilling new trailer for Scott Cooper's "Black Mass." Based on the book of the same name by Mark Mallouk and Jez Butterworth, the drama stars Depp as notorious Boston gangster James "Whitey" Bulger, who became an FBI informant to eliminate criminal competition from the '70s to the early '90s.