files/pictures/picture-35.jpgNeil Marshall is in discussion to take the helm of CBS Films' HELLFEST, reports Deadline.com
. The story follows a masked killer who goes on a rampage during an amusement park during Halloween when employees are dressed up as masked monsters themselves. William Penick and Chris Sey penned the script. Valhalla Ent.'s Gale Anne Hurd is the producer.