Penn Badgley stars in the psychological thriller 'The Stepfather', playing the role of Michael Harding, a teenager who becomes suspicious of his mother's new husband. As Michael delves deeper into his stepfather's past, he uncovers a series of dark secrets and lies. Badgley's performance in 'The Stepfather' is praised for his ability to convey the character's growing paranoia and fear. The film offers a suspenseful and chilling viewing experience for fans of the genre.