Warner Bros. has picked up The Ditch, an action spec script from prolific musicvid and documentary producer Sascha Penn, says Variety.

Set in the future, a super maximum-security prison has been constructed on Jupiter's moon where Earth's worst criminals are incarcerated. When a prison guard's family is taken hostage, he is coerced into helping the facility's most notorious terrorist, a man who was scheduled to be executed that day, escape.