L'assassino ha lasciato la firma

Robert Loggia

Detective Steve Carelli

Gerald S. O'Loughlin

Detective Mike Maguire

Ellen Parker

Teddy Franklin

Shirley Ballard

Alice Maguire

Russell Hardie

Detective Lt. Byrnes

Hal Riddle

Mercer

Bill Neff

Kling

Gene Miller

Miller

Vincent Gardenia

Danny the Gimp

John Gerstad

Laboratory Technician

Ralph Stantley

Detective Hal Willis

Glenn Cannon

Rip

Alan Manson

Clark

Sandra Stevens

Newlywed Wife

Janet Manson

Maggie Reardon