TV reporter Karen White (Scream Queen Dee Wallace!) becomes traumatised after investigative reporting leads her to a meeting in a dark room with a serial killer she knows only as "Eddie". Following their encounter (and his death thanks to the police), Karen is so traumatised she can neither remember what happened, or what she saw.
At the suggestion of a Psychiatrist (Patrick Macnee, she and her husband Bill are sent to the Colony, an experimental rural rehabilitation centre, where they meet the unusual locals such as the dark leather clad predatory Marsha and her strange animal-like brother.
Karen starts to hear howling at night, and is concerned things are not what they seem at the Colony.
Meanwhile her colleagues from work are investigating the serial killer case which leads them into more dangerous territory - werewolves!
With some spectacular special effects very cutting edge for it's time (it uses some of the technology similar to what was used in American Werewolf in London which was also released the same year as this movie) and an interesting storyline, this has survived through the ages despite it's outdated hairstyles and clothes. Definately a keeper you can watch again and again.