John Carpenter at his most enjoyable generally means 'Scope, working-class sass, kick-ass antiestablishment heroes, typecast villains who individually suggest quiet serial killers and collectively resemble hordes of whooping savages, a minimalist music score by Carpenter himself, and an overall affection for the way action movies looked and sounded 50 years ago. This movie—an action romp in which cops and prisoners go up against vengeful martian spirits on a colonized Mars in the year 2176—adds a few more likable ingredients: a flashback structure with several overlapping points of view, great use of Ice Cube and Pam Grier, lap dissolves, and a notion of shifting alliances that keeps things hopping. (Natasha Henstridge as the head cop is pretty lively too.) As in many other Carpenter movies both good and bad, a lot of the cramped settings can be traced back to the original version of The Thing. With Jason Statham, Clea DuVall, and Joanna Cassidy; Larry Sulkis collaborated with Carpenter on the script. 98 min.