When police inspector Gerald Blake wants to infiltrate a London stolen-goods gang, he does a thorough job of it. First, he robs a jewelry store, gets caught and is sentenced to prison. Then he teams up with gang-member Joey to make their escape. Once in the gang, Blake identifies the boss, Larry, and most of the other thieves, but not the "inside man." As a big fur job looms closer, the detective's task is complicated by the playful but seductive advances of Judy, a dazzling blonde who happens also to be the jealous Larry's girl friend.
Patrick Holt
as Insp. Gerald Blake
Sandra Dorne
as Judy
Sonia Holm
as Joan Blake
Robert Ayres
as Larry Conn
Dora Bryan
as Valerie
Michael Balfour
as Joey Long
Michael Brennan
as Mack
