Colonel March Investigates

Boris Karloff

Colonel March

Ewan Roberts

Inspector Ames

Joan Sims

Marjorie Dawson

Richard Wattis

Cabot

Sheila Burrell

Joan Forsythe

Anthony Forwood

Jim Hartley

Ronald Leigh-Hunt

Ireton Bowlder

Patricia Owens

Betty Hartley

Sin foto

John Hewer

John Parrish

Roger Maxwell

Maj. Rodman

Sin foto

Bernard Rebel

The Count

Dana Wynter

Francine Rapport

Marianne Stone

Customer in Bank (uncredited)

Peter Butterworth

Bank Clerk (uncredited)

Sin foto

Sonya Hana

Paula

Sin foto

Nita Valerie

Librarian

Cy Endfield

Man leaving British Museum library (uncredited)

Sin foto

Pat Hagan

Police Constable at Bank (uncredited)

Sin foto

Victor Harrington

Customer in Bank (uncredited)

Sin foto

Charles Saynor

Police Constable (uncredited)