Following the mysterious decapitation of an insurance investigator, Police Inspector Peretti is put onto the case, but all the clues lead to an unsolved case of kidnapping and murder.

George Hiltonas Inspector Luca Peretti
Salvo Randoneas Chief Marò
William Bergeras Giorgio Canavese
Marilù Toloas Dr. Anna Borgese
Manuel Zarzoas Brigadier Bozzi
Patty Shepardas Paola Rossi, the teacher
Piero Lullias Alessandro Moroni
Helga Linéas Mrs. Paradisi
Tullio Vallias Oliviero Moroni
Dante Maggioas Mattia Guardapelle