Cast & crew
Colonel March Investigates (1953)
Directed by Cy Endfield
Cast
| Boris Karloff | Colonel March |
| Ewan Roberts | Inspector Ames |
| Joan Sims | Marjorie Dawson |
| John Hewer | John Parrish |
| Ronald Leigh-Hunt | Ireton Bowlder |
| Patricia Owens | Betty Hartley |
| Sheila Burrell | Joan Forsythe |
| Richard Wattis | Cabot |
| Anthony Forwood | Jim Hartley |
| Roger Maxwell | Maj. Rodman |
| Bernard Rebel | The Count |
| Marianne Stone | Customer in Bank (uncredited) |
| Dana Wynter | Francine Rapport |
| Peter Butterworth | Bank Clerk (uncredited) |
| Nita Valerie | Librarian |
| Sonya Hana | Paula |
| Pat Hagan | Police Constable at Bank (uncredited) |
| Victor Harrington | Customer in Bank (uncredited) |
| Cy Endfield | Man leaving British Museum library (uncredited) |
| Charles Saynor | Police Constable (uncredited) |
Crew
| Cy Endfield | Director |
| Eric Cass | Boom Operator |
| Desmond Davis | Focus Puller |
| Donald Ginsberg | Producer |