Stanley Baker's dodgy Irish accent strikes the only false note in Joseph Losey's hard-nosed crime drama. A lethal combination of charm, guile and brute force makes jailbird Johnny Bannion the top dog in B block. Once he's released, Bannion is plunged straight back into a world of free-flowing booze, casual sex and cool jazz in his well-appointed bachelor pad. But there's no thought of going straight as he plots a lucrative racetrack heist with the reptilian Carter (Sam Wanamaker). The intrigue here lies not in the heist itself but in the web of betrayals that follow, as Losey and screenwriter Alun Owen build an authentic portrait of the criminal underworld on both sides of the prison wall. There's no hint here of the cartoonish Swinging London and stereotypical cockney villains that continue to plague British cinema. Robert Krasker's photography lends a stark beauty to the pollarded trees in the prison courtyard and Johnny Dankworth's score, punctuated by a mournful Cleo Laine ballad, is superb. With its harsh, sweaty depiction of prison violence, this is a million miles from the upper-class shenanigans depicted in the director's later films like The Servant and The Go-Between.