While looking for a stolen diamond necklace,the private investigator Bob Martin uncovers a smart serial killer.
Adolfo Celi ,
Anita Ekberg ,
Antonietta Fiorito ,
Bruno Arie ,
Dean Reed ,
Fabio Testi ,
Femi Benussi ,
Helène Chanel ,
Ini Assmann ,
Leon Askin ,
Mario Brega ,
Marlies Petersen ,
Nadja Tiller ,
Renato Baldini ,
Riccardo Garrone ,
Teodoro Corrà ,
Tom Felleghy ,
Werner Peters
