What if a child from another world crash-landed on Earth, but instead of becoming a hero to mankind, he proved to be something far more sinister?
FBI Agent Lee Harker is a gifted new recruit assigned to the unsolved case of an elusive serial killer. As the case takes complex turns, unearthing evidence of the occult, Harker discovers a personal connection to the merciless killer and must race against time to stop him before he claims the lives of another innocent family.
Marlo, a mother of three, including a newborn, is gifted a night nanny by her brother. Hesitant at first, she quickly forms a bond with the thoughtful, surprising, and sometimes challenging nanny named Tully.