John Saxon ( John Saxon )

Dr. Marcello Bassi

Letícia Román ( Letícia Román )

Nora Davis

Valentina Cortese ( Valentina Cortese )

Laura Craven-Torrani

Dante DiPaolo ( Dante DiPaolo )

Andrea Landini

Titti Tomaino ( Titti Tomaino )

Inspector

Luigi Bonos ( Luigi Bonos )

Albergo Stelletta

Milo Quesada ( Milo Quesada )

De Vico / Paccini

Gustavo De Nardo ( Gustavo De Nardo )

Dr. Facchetti

Giovanni Di Benedetto ( Giovanni Di Benedetto )

Professor Torrani

Jim Dolen ( Jim Dolen )

Priest (uncredited)

Franco Ressel ( Franco Ressel )

Arresting Officer at Airport (uncredited)

Robert Buchanan ( Robert Buchanan )

Dr Alessi

Marta Melocco ( Marta Melocco )

Murder Victim

Lucia Modugno ( Lucia Modugno )

Nurse

Franco Moruzzi ( Franco Moruzzi )

Policeman

Virginia Doro ( Virginia Doro )

Torrani's Maid

Mario Bava ( Mario Bava )

Uncle Augusto

Chana Coubert ( Chana Coubert )

Ethel Windell Batocci

Adriana Facchetti ( Adriana Facchetti )

Woman in Sguattera Restaurant

Dafydd Havard ( Dafydd Havard )

Tiberio Murgia ( Tiberio Murgia )

Peggy Nathan ( Peggy Nathan )

Lido Pini ( Lido Pini )

John Stacy ( John Stacy )