The original was actually one of my favorite VHS rental joints in the 80's. It starred Lost's Terry O'Quinn as a mentally disturbed man who kills his family trying to make the perfect family. He then changes his identity and "minor" facial features to hop to another family to give it another stab (no pun intended).
[Dylan Walsh] stars as David Harris, very much a "family values" man who mysteriously comes into the lives of single mothers with children and becomes the dream man they always wanted. When he woos Susan Harding [Sela Ward] and eventually moves in with her family, her teenage son Michael [Penn Bagdley] begins to suspect that David is not quite the dream man he pretends to be. Along with his girlfriend Kelly [Amber Heard] and Susan's friends [Paige Turco and Sherry Stringfield] they slowly start to piece together the mystery of the man who is set to become their stepfather, but they may be too late in getting to the truth.