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... see more