The Saint is back. The Saint (George Sanders) tackles another case as ace crime-fighter Simon Templar. Down in San Francisco, The Saint gets mixed up with the investigation into a major crime syndicate, who is the mysterious 'Waldeman' who is terrorising the city. Teaming up with his old sparring partner Inspector Fernack (Jonathan Hale)and the beautiful Val Travers (Wendy Barrie), who has her own reasons for wanting to catch Waldeman, Templar sets out to catch the gangster. But Waldeman is a dangerous adversary and The Saint will have to use all his cunning if he means to trap him.