This is widely accepted as the first giallo, even though it's still rather tame compared to other classics of the genre. Sadly, the script is pretty weak and the plot twist is uninspired. The movie's saving grace is really the beautiful camerawork and black and white cinematography.
Considerato uno dei primi,se non il primo,film giallo italiano e non poteva che essere Mario Bava a portare questo genere nel nostro paese.Il titolo rende omaggio a Hitchcock,ma la storia è totalmente diversa;girato in maniera grandiosa,con un ottimo bianco e nero che sembra illuminare le notti romane.Molti registi prenderanno spunto da questo,compreso Argento e la sua"trilogia degli animali".Bava vero pioniere.3*
Put off seeing this because Bava doing Hitchcock didn't that much & I prefer Bava's color films to his black and white. This is an underrated gem on first viewing. It's a brillian old school assimilation by appropriation nod to Hitchock while featuring some of his best set pieces. Who knew Bava could tell a plot driven story that well?
A sharp and stylish early thriller from director Mario Bava. A tight, fast-paced story full of great twists and expertly crafted suspense sequences atmospherically lensed through Bava's crisp black and white cinematography. Great use of Rome locations, as well as some wry humor. A suspense classic seminal to the giallo genre that shows Bava's burgeoning cinematic genius.