The first of several Stephen King adaptations to be directed by Mick Garris, Sleepwalkers is dated somewhat by its (then cutting-edge) CG morphing effects of the kind seen in Michael Jackson's music video for Black and White, and later in the Buffy the Vampire Slayer TV series. Creaky CGI trickery aside, the film is actually a whole lot of silly fun, with a daft story about a shapeshifting mother and son, Mary and Charles Brady (Alice Krige and Brian Krause), the sleepwalkers of the title, who must feed on the lifeforce of female virgins to survive.
Moving to a new town, Charles quickly sets his sights on schoolgirl Tanya (the gorgeous Mädchen Amick), but his nefarious plans are thwarted by the local cat population, who gather forces, their scratches deadly to the sleepwalkers.
Things get off to a wonderfully sordid start with a spot of incest between Charles and his mother, and the bonkers fun continues with hilarious attack by Charles on Tanya at a local graveyard make-out spot, some very silly gore (a pervy teacher loses his hand, a cop is stabbed in the ear with a pencil, Charles has his face seriously messed up, Ron Perlman gets his fingers chewed off, a guy is stabbed in the back with a corn cob, and a sheriff is impaled on a picket fence), several pointless cameos from horror luminaries (Stephen King, Joe Dante, John Landis, Tobe Hooper and Clive Barker), and a completely nutzoid finalé that sees the cats launch an all-out attack on Mary Brady, who has assumed her true reptilian/feline form.
To summarise: Sleepwalkers is by no means a classic King adaptation, but it's never a boring one.
6.5 out of 10, rounded up to 7 for IMDb.