John Loder

Reginald Parker / Edward Grey

June Duprez

April Manby Carson

Michael St. Angel

Lieutenant Bob Carson

Miles Mander

Chief Inspector W.R. Allison

Rose Hobart

Dorothy Kent

Gilbert Emery

Dr. Manby

Rex Evans

Leslie Shelton

Matthew Boulton

Inspector Graham

Olaf Hytten

Banks

Lydia Bilbrook

Mrs. Manby

Ian Wolfe

Lord Mayor Herman Brandon R. Clive

Milton Owen

Inspector (Uncredited)

Norman Ainsley

First Passenger (Uncredited)

George Atkinson

Bellboy (Uncredited)

Frank Baker

Inspector (Uncredited)

Frank Benson

Bellboy (Uncredited)

Lillian Bronson

Hotel Maid (Uncredited)

George Broughton

Bellboy (Uncredited)

Tom Burton

Policeman (Uncredited)

Wheaton Chambers

Clerk (Uncredited)

Robin Sanders Clark

English Pilot (Uncredited)

Harry Clay

Pilot (Uncredited)

Robert Cory

Chauffeur (Uncredited)

Alec Craig

Vacuuming Bellboy (Uncredited)

Victor Cutler

Pilot (Uncredited)

Herbert Evans

Manby's Butler (Uncredited)

Ellen George Ferguson

Mrs. Shackleton (Uncredited)

Sherry Hall

Hotel Desk Clerk (Uncredited)

Alec Harford

Ticket Clerk (Uncredited)

Joy Harington

London Waitress (Uncredited)

Lilyan Irene

Emily (Uncredited)

Colin Kenny

Inspector (Uncredited)

Connie Leon

Mrs. Clive (Uncredited)

Stanley Mann

Inspector (Uncredited)

Audrey Manners

Cashier (Uncredited)

Frank Mayo

Policeman (Uncredited)

Tom McGuire

Barman (Uncredited)

Mary McLeod

Pamela (Uncredited)

Gavin Muir

Captain Perry (Uncredited)

Joseph North

Second Passenger (Uncredited)

Robert R. Stephenson

Inspector (Uncredited)

Doris Stone

Dorothy's Maid (Uncredited)

Gus Taillon

Newsie (Uncredited)

David Thursby

Fireman (Uncredited)

Alan Ward

Policeman (Uncredited)

Eric Wilton

Luggage Clerk (Uncredited)

Steve Winston

Policeman (Uncredited)

Florence Wix

Mrs. Kent (Uncredited)