One surefire way to get the creepy message of your horror story across: use children speaking rhymes while nightmarish imagery flashes in the background.  That's the method that this new The Quiet Ones trailer employs, and it sure does the trick.  The John Pogue-directed picture follows a university professor and his students as they attempt to perform psychological experiments on a disturbed young girl.  Of course, it turns out that they've meddled with things they ought to have left alone, and the Quiet Ones become quiet no more.

Starring Jared Harris, Sam Claflin, Olivia Cooke, Erin Richards, and Rory Fleck-Byrne, The Quiet Ones opens April 25th.  Be sure to read up on this interview with Cooke, and check out the two previously released trailers and creepy motion posters.  Hit the jump to watch the new The Quiet Ones trailer.

Watch The Quiet Ones trailer below:

Here’s the official synopsis for The Quiet Ones:

A university student (Sam Claflin of The Hunger Games: Catching Fire) and some classmates are recruited to carry out a private experiment — to create a poltergeist. Their subject: an alluring, but dangerously disturbed young woman (Olivia Cooke of Bates Motel). Their quest: to explore the dark energy that her damaged psyche might manifest. As the experiment unravels along with their sanity, the rogue PHD students are soon confronted with a terrifying reality: they have triggered an unspeakable force with a power beyond all explanation. Inspired by true events, The Quiet Ones is directed by John Pogue from a screenplay by Craig Rosenberg and Oren Moverman and John Pogue, and based on a screenplay by Tom de Ville. Lionsgate presents and Exclusive Media presents in association with Traveling Picture Show Company a Hammer Films production in association with Midfield Films.