A creepy nursery rhyme and terrifying paranormal activities are featured in the latest trailer for Lionsgate's The Quiet Ones. While it still isn't ultimately clear who these quiet ones really are, they make their presence known when a university professor (Jared Harris) conducts an experiment where he tries to create a poltergeist through the negative human energy of a tormented young woman (Olivia Cooke). Sam Claflin, Erin Richards and Rory Fleck-Byrne co-star in this supernatural thriller directed by John Pogue, arriving in theaters April 25.