I just finished watching this yesterday. The only other Damiani film I've seen is Amityville II, so I can't really compare it to his other work. I'd probably only marginally classify this as a giallo; it's really more of a psychological drama than being much of thriller. There are some nice visual touches, especially the opening sequence when Jean Sorel inadvertantly connects into a telephone conversation and we're treated to what his mind imagines as he listens in (wherein we see the blue faced men pictured above as well as many other bizarre images). Sorel and Spaak carry the vast majority of the weight here, and although I found it to be well acted overall Sorel's mostly even-keeled demeanor doesn't really fit the psychologically fixated path his character goes down. On the other hand I found that Spaak played the 'rather complicated girl that we've all known and become fascinated by even though we know that it's really not a good idea' very well. Still, I greatly enjoyed the film and found myself entertained throughout. Recommended if you're prepared for a slightly warped character study rather than thrilling twists and turns.