To tourists and local sheriff, Daniel Willis (played by James Farentino), Potters Bluff, Rhode Island, seems like a pleasant and peaceful little town. But all of a sudden strange murders start to happen as strangers and passers-through are brutally murdered (e.g. burned alive) by hordes of townspeople. The sheriff ´s investigation leads nowhere while the undertaker, William G.Dobbs (Jack Albertson), is more than happy about the unexpected rise in business. At long last the sheriff catches on and finds evidence, not least of all a reel of black-and-white film, linking many of the town´s inhabitants, including his own beloved wife Janet (Melody Anderson), to the murders.
Although this movie appears to be similar to Bodysnatchers and other Invaders-type movies, the first hour or so is quite entertaining, nerve-tingling even, and contains some well placed shocks. Alas, the story then becomes to predictable and the twist at the end is no surprise at all.