In this 2014 horror film directed by David Robert Mitchell, a young woman named Jay, played by Maika Monroe, finds herself relentlessly pursued by a mysterious supernatural entity after a seemingly innocent sexual encounter. The entity, which can take the form of anyone, follows her at a slow but constant pace, creating an atmosphere of unyielding tension and dread. The film is noted for its unique premise and atmospheric cinematography, which has garnered critical acclaim. It can be viewed for free on 123Movies / Movies123.