Coming off of the not-so-good The Darkness, Wolf Creek director Greg McLean returns to the genre with the James Gunn-penned (Guardians of the Galaxy) horror film The Belko Experiment, which looks absolutely nutty. It’s about a bunch of Belko employees who find out that they’re really just guinea pigs for an experiment that will end in murder and mayhem—now that’s a shitty Monday!

The Belko Experiment is out in theaters on March 17, 2017.

On what appears to be a normal day at Belko Industries, Belko employees are horrified when they find out that they’ve become guinea pigs in a company-wide experiment which will lead them to either kill their fellow employees or be murdered themselves. The experiment is masterminded by a mysterious voice which is controlling the loud speaker and instructing the employees to slaughter each other by any means necessary.

Among the cast is Tony Goldwyn, Adria Arjona, John Gallagher Jr., John C. McGinley, Sean Gunn, David Dalmastian, Michael Rooker, and Steven Blakeheart.