Thomas Kretschmann, Josie Ho, Joseph Morgan, Erin Richards and Hugo’s Max Wrottesley are joining Sharlto Copley in Open Grave. The haunting thriller sets six individuals waking up together next to a grave of rotting bodies in the middle of nowhere. None of them knows how they got there. Gonzalo Lopez-Gallego, who helmed Apollo 18, is directing. Eddie and Chris Borey wrote the script. Open Grave is set to begin shooting Thursday. William Green and Aaron Ginsburg of Atlas Independent, a division of Charles Roven’s Atlas Entertainment, are producing with Michael Wunderman. It’s being produced in association with 852 films.