
Inspector Blomfield catches a thief who has a fatal accident while trying to escape in his car. A short time later, his drug-addicted brother Johnny enters the police station while Blomfield is investigating a murder and threatens to blow himself and everyone else up with a bottle of nitroglycerine.

as Eddie Blomfield

as Johnny Smith

as Sergeant Harry Colman

as Susan Gillespie

as Inspector Sterling

as Colonel Lister

as Mac O'Hara

as Blinky Smith

as Fred Lancaster

as Arthur Baker

as Nelly Blomfield

as Shakespeare

as Mary