"Peeping Tom" is a masterpiece of school-created horror and suspense cinema, the first film in history belonging to the slasher subgenre. The script is smart, it was also controversial for its time touching psychological issues. The cinematographic direction is well done. The performances are tremendous. The cinematography is very colorful, giving the film a great aesthetic atmosphere, which obviously influenced the later giallo subgenre. "Peeping Tom" is a first-rate classic.