Also Known As:
- Der Tod trägt schwarzes Leder
- Diestramenos ektelestis
- I amesos drasis se synagermo
- La lame infernale
- O dolofonos me to balda
- The Coed Murders
- What Have They Done to Your Daughters?
- Massimo Dallamano
- Massimo Dallamano
- Ettore Sanzò
- Giovanna Ralli ... Assistant District Attorney Vittoria Stori
- Claudio Cassinelli ... Inspector Silvestri
- Mario Adorf ... Inspector Valentini
- Franco Fabrizi ... Bruno Paglia (photographer)
- Farley Granger ... Mr. Polvesi
- Marina Berti ... Mrs. Polvesi
- Paolo Turco ... Marcello Tosti
- Corrado Gaipa ... District Attorney
- Micaela Pignatelli ... Rosa
- Ferdinando Murolo ... Sgt. Giardina
- Salvatore Puntillo ... Napoli
- Eleonora Morana ... Polvesi's housekeeper
- Sherry Buchanan ... Silvia Polvesi (as Cheryl Lee Buchanan)
- Roberta Paladini ... Patrizia Valentini
- Luigi Antonio Guerra ... Journalist
- Renata Moar ... Laura
- Adriana Falco ... Giuliana Bigi
- Clara Zovianoff ... Mrs. Talenti
- Leonardo Severini ... Russo - policeman
- Lorenzo Piani ... Journalist
- Nick Alexander ... TV Announcer (voice: English version)
- Bruno Alias ... Journalist / Policeman
- Antonio Anelli ... Journalist
- Giancarlo Badessi ... Bruno Paglia's Lawyer
- Francesco D'Adda ... Doctor
- Attilio Dottesio ... Coroner
- Michael Forest ... Inspector Valentini (voice: English version)
- Edward Mannix ... Sgt. Giardina (voice: English version)
- Giuseppe Marrocco ... Policeman at Documentary Projection
- Susan Spafford ... Assistant District Attorney Vittoria Stori (voice: English version)
- Pat Starke ... Rosa (voice: English version)
- Frank von Kuegelgen ... Journalist (voice: English version)
- Steffen Zacharias ... Professor Beltrame
- Luciano Zanussi ... Policeman