British intelligence officers head off a Nazi plot to kidnap an atomic scientist.
Robert Newton
as Capt. David Grant
Raymond Lovell
as Paul Faber
Guy Middleton
as Capt. Tony Hunter
Muriel Pavlow
as Marion Decker
Herbert Lom
as Keitel
John Ruddock
as Bowman
Martin Miller
as Professor Hansen
Brenda Bruce
as Lily Leggett
Gerald Case
as Inspector Emerson
Scott Forbes
as Lieut. Allen (as Julian Dallas)
Leslie Dwyer
as George Leggett
Valentine Dyall
as Sir George Bell
