This Spanish/Italian co-production is surprisingly smart for its era, mingling straight-up Romero-esque zombie action with the anti-authoritarian paranoia and ecological concerns of The Crazies or Grapes of Death. As with Grapes of Death, you can see its DNA in the recent series Les Revenants out of France. Ray Lovelock, usually an unlikable stiff, is uncharacteristically watchable as the protagonist, though Arthur Kennedy doesn’t have a lot to do. Most importantly, the setting is legitimately creepy and the cast isn’t unbearably stupid and annoying as in so many Italian zombie films of the Bruno Mattei variety, marking this one as a cut above.
2 1/2 out of 4 stars (good).