Bad Sister is an American thriller television film released in 2015, directed by Doug Campbell. The story follows a Catholic schoolgirl, Zoe (Devon Werkheiser), who becomes dangerously infatuated with her new teacher, Sister Sophia (Alyshia Ochse). Beneath her nun’s habit, Sophia hides a dark and manipulative side, using her charm and deceit to seduce Zoe’s brother, destroy relationships, and weave herself into the family’s life.
As tensions rise, Zoe realizes the true danger of Sophia’s obsessive behavior and must find a way to expose her before tragedy strikes. Mixing psychological tension with family drama, the film explores themes of obsession, deceit, and the danger of misplaced trust.
Bad Sister gained attention for its provocative premise and over-the-top thriller style, appealing to fans of Lifetime’s suspense-driven storytelling. Alyshia Ochse’s performance as the manipulative “bad sister” stands out, giving the film its unsettling edge.