Maddie, a local reporter investigating a series of killings targeting similar looking women is caught off guard when her younger sister Olivia, is attacked in her own home. Urging on the side of caution, Maddie suggests they take a self-defense course. When Olivia starts to fall for their instructor, Maddie becomes skeptical when he refuses to reveal anything about himself, and tries to intervene before the relationship turns into a deadly obsession.
When Kathy’s family is threatened, she discovers that her husband has kept a chilling secret from her for years: Her teenage daughter is not really her own flesh and blood, and the past is now coming back to haunt them all in a deadly way.
