John Mills

Superintendent Graham

Horst Buchholz

Korchinsky

Hayley Mills

Gillie

Yvonne Mitchell

Anya

Megs Jenkins

Mrs. Phillips

Anthony Dawson

Barclay

George Selway

Det. Sgt. Harvey

Shari

Christine

George Pastell

Poloma Captain

Paul Stassino

Poloma First Officer

Marne Maitland

Doctor

Meredith Edwards

Williams

Marianne Stone

Mrs. Williams

Rachel Thomas

Mrs. Parry

Brian Hammond

Dal Parry

Kenneth Griffith

Mr. Seymour

Eynon Evans

Mr Morgan

Christopher Rhodes

Inspector Bridges

Edward Cast

Det. Con. Thomas

David Davies

Desk Sergeant

Michael Anderson Jr.

Boy with Cap Gun (uncredited)

Harry Baird

Bridegroom (uncredited)

Tom Bowman

Seaman (uncredited)

Jim Brady

Pub Customer (uncredited)

Peter Halliday

Seaman (uncredited)

Hubert Hill

Policeman (uncredited)

Glyn Houston

Detective at Police Station (uncredited)

John Howard

Detective (uncredited)

Jack May

Mr Willis (uncredited)

Harry Phipps

Man in Bar (uncredited)

Stan Simmons

Referee (uncredited)

John Wilder

Police Line-Up (uncredited)