Anton Yelchin as Pat, the bassist of the Ain't Rights Imogen Poots as Amber, Emily's friend and witness to her murder Alia Shawkat as Sam, the guitarist of the Ain't Rights Joe Cole as Reece, the drummer of the Ain't Rights Callum Turner as Tiger, the singer of the Ain't Rights Patrick Stewart as Darcy Banker, the leader of the skinheads Macon Blair as Gabe, a skinhead and club employee Mark Webber as Daniel, a skinhead and Tad's cousin in a relationship with Emily Kai Lennox as Clark, a skinhead and attack dog trainer Eric Edelstein as Big Justin, a skinhead bouncer David W. Thompson as Tad, a radio host and promoter Brent Werzner as Werm, a member of Cowcatcher and Emily's murderer Taylor Tunes as Emily, a female skinhead and Amber's friend who has been murdered by Werm. Samuel Summer as Jonathan, a skinhead Mason Knight as Kyle, a skinhead Colton Ruscheinsky as Alan, a skinhead Jacob Kasch as the bartender