Betrayal and espionage abound as an experimental aircraft is readied for its maiden voyage.
Peter Lorre
Colonel Gimpy
Brian Donlevy
Ace Martin
Helen Wood
Ruth Franklin
Ralph Morgan
John R. Flemyng
Thomas Beck
Joe Randall
Kay Linaker
Mrs. Fleming
Lester Matthews
Sidney Grant
Earle Foxe
Operative #30
J. Carrol Naish
Operative #77
Gloria Roy
Operative #16
