Only so-so, this rather pedestrian thriller is from the director of a couple of decent giallo, Amuck and So Young, So Lovely, So Young. They are not great examples of the genre and this is somewhat less appealing. Hugh O'Brian at least tries and is never as wooden as Cyd Charisse who seems to barely understand what she is to do and unprepared every time she has to speak. Just watchable, this film is in fact saved by its fascinating location shooting in Rome, where we even get to go inside the famous Cinecitta film studios and the excellent and surprisingly natural sequences in Venice. The only other thing going for this is that it is available at a very decent price in a rather attractive DVD package.