Ruthless killer for hire (Danny Dyer) breaks the rules of his profession and falls for a beautiful young woman. Discovering the notorious gangland brothers (Martin and Gary Kemp) had hired him to kill her father, his world breaks down and he must turn against his criminal employers and their gang to save the woman he loves.

Told over one horrifying night, Deviation will take you on a white-knuckle journey into the mind of Frank Norton, a dangerous schizophrenic murderer as he escapes from Broadmoor Hospital and embarks on a murderous rampage across London. But when Frankie takes a hostage, the deadly game of cat-and-mouse truly begins.