Biografie: Kevin Rankin is an American actor. He is known for his roles as Herc in the NBC series Friday Night Lights, Tyler Briggs in the NBC series Trauma, Roe Sanders in the CBS series Unforgettable, Kenny in the AMC series Breaking Bad, and Derek "Devil" Lennox in the FX TV series Justified. He stars as Detective Tommy Killian on the CBS series East New York.