The Stepfather (1987)

Director: Joseph Ruben

Cast: Terry O'Quinn as Jerry Blake, Jill Schoelen as Stephanie Maine, Shelley Hack as Susan, Charles Lanyer as Dr. Bondurant, Stephen Shellen as Jim Ogilvie, Stephen E. Miller as Al Brennan, Robyn Stevan as Karen, Jeff Schultz as Paul Baker, Lindsay Bourne as Art Teacher, Anna Hagan as Mrs. Leitner, Gillian Barber as Anne Barnes, Blu Mankuma as Lt. Jack Wall, Jackson Davies as Mr. Chesterton, Sandra Head as Receptionist, Gabrielle Rose as Dorothy Rinehard

After reading the plot outline, some of you might roll your eyes and
mutter,
"Oh, great. A formulaic, plotless, cardboard-character, derivative
flapdoodle." Not so. The plot, which gives life and depth to the
characters,
is so ingeniously written that most viewers will probably not be able to
anticipate what's coming next. Breath-taking suspense, occasional
pitch-black humor, a creepy, creepy villain, superb acting, and a roller
coaster pace all add up to make one heck of a ride. Terry O'Quinn's
character is probably the creepiest maniac to ever grace the screen since
Anthony Perkins in Psycho. If you have even the slightest interest in
horror
films, I strongly urge you to rent this film.