Eddie Constantine as Larry Brennan

Dawn Addams as Hedi von Hartmann

Marius Goring as Rudi Siebert

Christopher Lee as Jaeger

Nadine Tallier as Zizi

Walter Gotell as Hamburg inspector

Willy Witte as Von Hartmann

Leslie 'Hutch' Hutchinson as Piano Player

Gaylord Cavallaro as Mike Jones

Hubert Mittendorf as Schneider

Derek Sydney as Barman

Penelope Horner as Bar Girl

Georgina Cookson as Billie

Clive Dunn as Cemetery Keeper

Anna Turner as Billie's Maid

Sheldon Lawrence as Patrolling Policeman

Steve Plytas as Station Sergeant

Thomas Gallagher as Truck Driver

Stella Bonheur as Sister Angelica

Tom Bowman as Tough

Margaret Boyd as Sister Catherine

Walter Buhler as Uniformed Policeman

Tsai Chin as 1st Girl in Fight

Diane Potter as 2nd Girl in Fight

Marie Devereux as Girl with the Mink

George Mikell as Border Guard

Susan Travers as Girl at Billie's