Thanks go to firstpower100 for sending me this DVD.
The Stepfather is a 1987 American thriller film starring Terry O'Quinn in the title role. It is loosely based on the life of mass murderer John List, although the plot is more commonly associated with slasher films of the era than a true story. It was directed by Joseph Ruben and written by Donald E. Westlake, from a story by Westlake, Carolyn Lefcourt and Brian Garfield.
This film was met with critical acclaim upon its release. The film was also followed by two sequels, released in 1989 and 1992 respectively and a remake also called The Stepfather which was released on October 16, 2009.