Do not believe the synopsis! Whilst the plot has a lot of potential, the film does not deliver it. The 'ordinary family life, and his wife are well acted, but the 'sex addiction' is poorly implemented, to the point of being unbelievable, and unpleasant - and very definitely not erotic! As a result I think the film fails to deliver, and ends up largely being a succession of unpleasant (but not particularly unusual) sex episodes, without exploring why Sammy ever got into this mess (or why anyone has sex with him, or how he could change). There is a small element of suspense related to how or when he will be found out, but that hardly sustains much interest. The ending is ultimately left ambiguous, which in this case I consider to be due to the producer being too lazy to provide a 'proper' ending. However, if you are a fan of rather violent and unloving sex, with some psychological review and contrast with nice family scenes, you could find this interesting.