Bulldog Drummond leaves retirement to help a Scotland Yard Sergeant catch thieves armed with radar.
Walter Pidgeon
as Major Hugh "Bulldog" Drummond
Margaret Leighton
as Sergeant Helen Smith
Robert Beatty
as Arthur Gunns
David Tomlinson
as Algernon "Algy" Longworth
Peggy Evans
as Molly
Charles Victor
as Inspector McIver
Bernard Lee
as Colonel Webson
Patric Doonan
as Alec
James Hayter
as Bill
Michael Allan
as Bert (uncredited)
Frank Andrews
as Harry (uncredited)
Richard Caldicot
as Judge (uncredited)
