Colonel March
Insp. Ames
Cabot
Joan Forsythe
Jim Hartley
Ireton Bowlder
Betty Hartley (archive footage)
John Parrish
Marjorie Dawson
Maj. Rodman
Paula
The Count
Francine Rapport (as Dagmar Wynter)
Librarian
Bank clerk (uncredited)
Man leaving British Museum library (uncredited)
Police Constable at Bank (uncredited)
Customer in Bank (uncredited)
Police Constable (uncredited)