Lights Out is an ambitious character drama centering around a retired boxer who suffers from pugilistic dementia, the gradual loss of memories suffered after blunt force trauma to the head. Holt McCallany stars as Lights Leary, an aging former heavyweight boxing champion who struggles to find his identity and support his wife and three daughters after retiring from the ring. Financial problems leave him at a perilous crossroads - battling the urge to return to boxing or reluctantly accepting a job as a brutal and intimidating debt collector. Catherine McCormack stars as Theresa Leary, Lights’ wife who is finishing her medical residency; Pablo Schreiber as Johnny Leary, Lights’ brother and business manager whom Lights put through college; and Stacy Keach as Pops, Lights’ father and former trainer who runs the boxing gym owned by Lights.