A thriller with some iconic scenes and even a few laughs thanks to Bud Spencer and the homosexual investigator. The script is always the weak point of Dario Argento's films, and this film is no exception. The biggest flaw is probably not giving me other probable killers throughout the movie (of whom should I suspect? [spoiler]Of the keyboardist of the band, with whom the protagonist had a bickering the first 3 minutes of the film? Of the writer friend who has absolutely no motive? Of the lame guy who orders porn magazines by mail and who doesn't have a single line of dialogue?? [/spoiler] There were simply no other options other than the most obvious and certain, [spoiler] namely the protagonist's wife who decides to leave just when the old stalker is killed for real, and therefore cannot carry out the crimes in the killer's place.[/spoiler]
A little too obvious.
I think Argento is an extremely overrated director.