Therapist Will Harper (Chris Messina) and young daughters Sadie (Sophie Thatcher) and Sawyer (Vivien Lyra Blair) were still reeling from the sudden loss of wife and mother when Will took on the perturbed Lester Billings (David Dastmalchian), who claimed his kids were stalked and killed by a malevolent force. Following his suicide in their home, the Harpers slowly find to their horror that he wasn't merely delusional. Shocker from the Stephen King short story co-stars Marin Ireland, LisaGay Hamilton. 99 min. Widescreen; Soundtrack: English.