The first two seasons, with the exception of the last episode of Season 2, were excellent and well acted. When they decided to reboot the series for season 3, there was a serious drop off in show quality. They abandoned a great cliffhanger from season 2, replaced the cast with far inferior actors/actresses, and created a story with characters you really don't care about. Stick to the first two seasons.
Review of Scream: The TV Series
