Once a Crook

Charlie Hopkins is a retired burglar with an expertise in safecracking. His ex-partner The Duke (Bernard Lee) holds a grudge against Charlie, since he believes he ratted him out and sent him to jail. The Duke hires Bill Hopkins (Cyril Cusack), Charlie's son, to help him perform a hit, with an intention to frame the kid. Bill turns out to be an even better safracker than his old man, and the hit is a success.