At first I thought this movie would only be mildly suspenseful, but how wrong I was. This is quite a clever movie. I was really amazed by the thorough attention that is given to even minor details. Everything in this movie just fits together perfectly....the pace, the setting, the overall mood, the way one thing leads to another....everything. The director of this movie did a great job. Of course, what would this movie be without the excellent performances given by its cast. Who would've known that Audrey Hepburn, one of the classiest ladies of the twentieth century, would be so appropriate for a thriller like this one. She plays a blind woman, and she is so right for this part. Her performance is remarkable....I cannot picture any other actress of the day in that role. Also, Alan Arkin is awesome, playing a psychotic killer. For the most part, this movie contains some shocking moments that will make you jump. Definitely wait until dark to see this movie....turn off all the lights and watch it after midnight if you can, for an even greater suspenseful effect.