Rock musician Rob Zombie made his feature-directing debut with House of 1000 Corpses (2003), a gruesome tribute to 70s horror exploitation movies that was spoiled by its campy excesses and self-conscious montage of clips from classics. For this sequel he’s settled down to business, and his story of a family of serial killers (Sid Haig, Bill Moseley, Sheri Moon) on the run from a vengeful sheriff (William Forsythe) in 1978 captures the cold, cruel urgency of the original Texas Chainsaw Massacre. The sadism of 1000 Corpses is ameliorated here by the addition of an action plot and open spaces, and the comedy is more skillfully played, mingling agreeably with Zombie’s ardor for southern trash culture (the final showdown plays out to the strains of “Freebird,” for heaven’s sake). R, 101 min.