Contrary to what my fellow IMDb reviewer Weirdling_Wolf writes, I believe that the French have given us plenty of decent horror films*, from B&W classic Les Diaboliques, to the dreamlike work of Jean Rollin, to zombie/action flick La Horde, to more contemporary shockers Inside and Martyrs. Devil Story isn't one of them though, being a strong contender for the strangest, if not worst, horror film ever made. This low budget crap-fest from director Bernard Launois is technically inept in almost every department and has a virtually non-existent plot, making it a must for fans of z-grade schlock.
The film opens with a grunting, snuffling facially disfigured man in an SS uniform killing several people with a knife and dumping their bodies down a well, before continuing his murderous spree with a shotgun. The action then cuts to a young married couple who experience car trouble during a storm and seek shelter at a stately home occupied by an old man and his wife. The lady of the house tells the visitors a story about a group of bandits who lured ships onto the rocks, and explains that their descendants still live in the area: the ugly monster from the opening scene and his mother.
During the night, the young woman decides to up and leave without her husband, but wishes she had stayed put when she runs into the hideous killer and his mum, who try to seal her in a tomb. She escapes, but runs into an Egyptian mummy and a zombie woman, who are also roaming the countryside. Meanwhile, the old man from the stately home is trying to shoot a very noisy horse with his shotgun.
Devil Story suffers from poor direction, choppy editing, amateurish make-up effects and lousy acting, but the worst thing about it is the soundtrack, with all sound effects at maximum volume and repeated incessantly: in addition to the constantly whinnying horse we also get a very vocal owl, and repetitive use of that old horror cliché Bach's Toccata and Fugue in D minor, BWV 565 in a misguided attempt to add atmosphere. I reckon if anything is going to make you want to hit the stop button, it'll be that damn horse!
On the plus side, the gore effects, while not exactly special, are plentiful and fun, with quite a lot of spurting blood from wounds, the monster getting injured so that part of his scalp flaps around, and one really unconvincing but very messy moment when the mummy stomps on the man with the shotgun causing his guts to spill out.
2/10. It's film making at its most incompetent, but for a select few, Devil Story will prove every bit as entertaining as a Marvel blockbuster is for the masses.
*their music still sucks, though!