It Follows (2014)

For most teens, sexual awakening comes with the fear of pregnancy or sexually transmitted diseases. But for Jay (Maika Monroe), a seemingly innocent one-night stand leads to a sexually transmitted haunting: a nefarious supernatural force that follows Jay and threatens to take her life. This heart-stopping horror flick sets a new standard for the genre, as director David Robert Mitchell injects every scene with dread while maintaining a sympathetic story of teen sexuality.