John Saxon

Character: Dr. Marcello Bassi

Letícia Román

Character: Nora Davis

Valentina Cortese

Character: Laura Craven-Torrani

Dante DiPaolo

Character: Andrea Landini

Titti Tomaino

Character: Inspector

Luigi Bonos

Character: Albergo Stelletta

Milo Quesada

Character: De Vico / Paccini

Gustavo De Nardo

Character: Dr. Facchetti

Giovanni Di Benedetto

Character: Professor Torrani

Jim Dolen

Character: Priest (uncredited)

Franco Ressel

Character: Arresting Officer at Airport (uncredited)

Robert Buchanan

Character: Dr Alessi

Marta Melocco

Character: Murder Victim

Lucia Modugno

Character: Nurse

Franco Moruzzi

Character: Policeman

Virginia Doro

Character: Torrani's Maid

Mario Bava

Character: Uncle Augusto

Chana Coubert

Character: Ethel Windell Batocci

Adriana Facchetti

Character: Woman in Sguattera Restaurant

Dafydd Havard

Character:

Tiberio Murgia

Character:

Peggy Nathan

Character:

Lido Pini

Character:

John Stacy

Character: