Dana Andrews

Scott Walters

Jeanne Crain

Marian Taylor

David Farrar

Perry Henderson / Arthur Henderson

Patrick Barr

Supt. Roberts

George Coulouris

Capt. Malburn

Charles Goldner

Martell

Wilfrid Hyde-White

Pitt

Heather Thatcher

Lady on the Niagara

Michael Mataka

Vincent

Paul Carpenter

Pan American Airways Clerk

Delphi Lawrence

Pan American Girl

Mary Mackenzie

Junior Secretary

Bee Duffell

Irish Landlady

Alec Finter

Waiter

Patrick Parnell

Wireless Operator

John Salew

Clerk

Walter Gotell

Jim

Simone Silva

Redhead (unconfirmed, uncredited)

Mary Merrall

Mrs. Henderson

Charles Carson

Skipper

Bill Fraser

Smith, Hotel Clerk

Lionel Ngakane

Servant

Robert Sansom

Steward