A demobbed soldier, Gordon Laid, returning from World War II meets Maxine Lupercal, a member of a traveling troupe of actors returning to England on the same ship. As Gordon closely resembles a member of the troupe of actors, mistaken identity causes him to become embroiled in various murders and an international espionage plot involving a cigarette lighter that strangely affects electricity. The action reaches its comical climax on stage with Gordon and his double as the spies and the police converge on the theatre is a desperate attempt to retrieve the missing cigarette lighter.
Maxine Lupercal
Gordon Laid / Jimsy Deveroo
Moncrieff Dovecraft
Inspector Nugent
Gloria
Rupert Dorchester
Sgt. Costello
Heavy
Heavy
Fenton Umfreville
PC Baxter
Greenleaf
Lady in Phone Booth
The Commissioner
Film Director
Sgt. Millicent
Rusper
Oriental Girl
Eleanor
Young Tart
ATS Girl
Marti
Goddard Ronaldshay
Thelma
Helen
Wilbur
Mortician
Old Lady
Corporal
Stage Chorus
Stage Chorus
Piers Horrabin
A.T.S. Girl (uncredited)