After a daring escape from a psychiatric hospital, the Stepfather assumes a new identity and sets out in search of a new family to marry into....and kill!  He finds the perfect victims: attractive and recently divorced Carol Greyland and her son Todd.  Posing as a caring family therapist named Gene, he appears to be the ideal second husband and father for these two lonely people.  But Carol's best friend Matty suspects that Gene is too good to be true.  When Carol's first husband returns to attempt a reconciliation, he trigger's Gene's fear of discovery, sending him on a violent, bloody killing spree.  Eliminating everyone who stands in his way, Gene turns his wedding to Carol into one of the most horrifying and gruesome sequences ever filmed!