Florinda Bolkan as Carol Hammond

Stanley Baker as Inspector Corvin

Jean Sorel as Frank Hammond

Silvia Monti as Deborah

Alberto de Mendoza as Sergeant Brandon

Penny Brown as Jenny

Mike Kennedy as Hubert

Ely Galleani as Joan Hammond

George Rigaud as Dr. Kerr

Ezio Marano as Lowell - Scientific Squad

Franco Balducci as McKenna

Luigi Antonio Guerra as Policeman

Erzsi Paál as Mrs. Gordon

Gaetano Imbró as Policeman

Leo Genn as Edmond Brighton

Anita Strindberg as Julia Durer (uncredited)

Tony Adams as Policeman (uncredited)

Jean Degrave as St. Paul's Clinic Director (uncredited)

Basil Dignam as Commissioner McCloud (uncredited)

Ursel Eberz as Policewoman Beth (uncredited)

Piero Nistri as Mrs. Gordon's Chauffeur (uncredited)

Fred Wood as Train passenger

John Clifford as Train Passenger (uncredited)

Lew Hooper as Policeman (uncredited)

George Spence as Train Passenger (uncredited)

Rita Tobin-Weske as Train Passenger (uncredited)

Jack Armstrong as

Fred Wood as