The Fifth Cord

A journalist finds himself on the trail of a murderer who's been targeting people around him, while the police are considering him a suspect in their investigation.

• 
  Luigi Bazzoni
• 
  Luciano Marin

• 
  Franco Nero
  Andrea Bild
• 
  Silvia Monti
  Helene Volta
• 
  Wolfgang Preiss
  Police inspector
• 
  Edmund Purdom
  Edouard Vermont
• 
  Rossella Falk
  Sophia Bini
• 
  Renato Romano
  Dr. Richard Bini
• 
  Guido Alberti
  Traversi
• 
  Luciano Bartoli
  Walter Auer
• 
  Agostina Belli
  Giulia Soavi
• 
  Maurizio Bonuglia
  John Lubbock
• 
  Pamela Tiffin
  Lu Auer
• 
  Corrado Gaipa
  Editor
• 
  Andrea Scotti
  Vogel
• 
  Ira von Fürstenberg
  Isabel Lancia
• 
  Luigi Antonio Guerra
  Man
• 
  Irio Fantini
  Man
• 
  Michel Barnes
  Tony Volta (uncredited)
• 
  Jean-Pierre Clarain
  Journalist in Bini's Home (uncredited)
• 
  Alfonso Giganti
  Silvester party guest (uncredited)
• 
  Nando Sarlo
  Man in Black Tie (uncredited)