Carole

Florinda Bolkan

Carol Hammond

Stanley Baker

Inspector Corvin

Jean Sorel

Frank Hammond

Silvia Monti

Deborah

Alberto de Mendoza

Sergeant Brandon

Penny Brown

Jenny

Mike Kennedy

Hubert

Ely Galleani

Joan Hammond

George Rigaud

Dr. Kerr

Ezio Marano

Lowell - Scientific Squad

Franco Balducci

McKenna

Luigi Antonio Guerra

Policeman

Erzsi Paál

Mrs. Gordon

Gaetano Imbró

Policeman

Leo Genn

Edmond Brighton

Anita Strindberg

Julia Durer (uncredited)

Tony Adams

Policeman (uncredited)

Jean Degrave

St. Paul's Clinic Director (uncredited)

Basil Dignam

Commissioner McCloud (uncredited)

Ursel Eberz

Policewoman Beth (uncredited)