* Gian Maria Volontè as Inspector Bellodi
* Florinda Bolkan as Augusta Terzi
* Renato Salvatori as Saverio Laurana
* Umberto Orsini as Dr. Lanzi
* Ettore Mattia as Franco Laurenzi
* Vittorio Duse as Lawyer Roseo
* Orazio Orlando as Antonio Terranova
* Tina Aumont as Anna Laurana
* Giuseppe Addobbati as Detective Serpente
* Alfredo Mayo as Chief Inspector