- HD 1080
- Runtime: 117m.
- Status: Released
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- Languages: it
- Country: Italy
- Director: Dario Argento
- Stars: Max von Sydow, Stefano Dionisi, Chiara Caselli, Gabriele Lavia, Rossella Falk
- keywords: drowning, police, heart attack, sadism, italy, insomnia, murder, decapitation, serial killer, whodunit, corpse, maniac, police detective, psycho killer, black gloves
- Production_studio: Tele+, Medusa Film, Opera Film (II)
- Slogan: Creepier than Jack the Ripper.
- The Sleepless is featured in the top rankings of 2001
- #49 in Top Thriller Movies of 2001
- #22 in Top Mystery Movies of 2001
- #27 in Top Horror Movies of 2001
An elderly and retired police detective and a young amateur sleuth team up to find a serial killer whom has resumed a killing spree in Turin, Italy after a 17-year hiatus.
