Cynthia Gibb [Short Circuit 2, Fame: The TV Series] also does a good job as Chris, your typical clean cut, fresh faced 80's girl. She has good chemistry with Spader and their performances are definitely the heart of this film.
Director/Writer Rowdy Herrington is not exactly a household name. He is best known for the Patrick Swayze cult classic Road House which he also directed. Herrington creates a nice atmosphere with this picture but the screenplay could have used a little more work. There are some holes here and there and the ending is quite unsatisfying and a bit disappointing.
All in all, Jack's Back is a good movie. It could have been great with a little more work on the story which has a great deal of potential it never fully reached.
For more info check out the film's entry in IMDB.