"The Stepfather" is a 2009 psychological thriller directed by Nelson McCormick. The film follows a man named David Harris, who assumes the identity of a loving stepfather after a family tragedy. However, his dark past and violent tendencies begin to surface, leading to tension and fear within the family. The story centers around a teenager named Michael, who becomes suspicious of David's true nature. As Michael investigates, he uncovers disturbing secrets that put his family in danger. The film explores themes of trust, deception, and the complexities of family dynamics, making it a gripping watch for thriller enthusiasts.