First time watching this early effort from the king of giallos, Dario Argento. Not nearly as brutally violent as , say, Suspiria but it had a couple moments. Really nice interplay between an investigative reporter, and a blind puzzle enthusiast who are both caught up in solving a murder spree. Couple twists had me guessing and the dubbing I was forced to watch (streaming on Netflix) was actually very good especially since it allowed me to see the film in HD. If you are looking for early Argento there are probably worse places to look than this.