WraithApe’s review published on Letterboxd:
Much maligned, though I'm not really sure why. It's certainly not the best thing with King's name attached, but still a damn sight better than the likes of Pet Sematary IMO. The basic idea is that there are these beings called Sleepwalkers, who gave rise to the myth of vampires and who, like their fictional counterparts, need mortals to sustain their immortality. Unlike vampires, Sleepwalkers share their DNA with cats (rather than bats) and suck their prey's life force rather than their blood. In order to prolong his deeply unhealthy relationship with his Sleepwalker mother, Charles Brady must find a suitable victim and lure her to their lair.
The mythology is a bit ropy and smacks of basically being an excuse to make yet another vampire movie of a slightly different hue. Some things aren't really explained - why are they derived from cats, and why are cats also Sleepwalkers' nemeses? They can shape-shift but why does that extend to being able to shape-shift inanimate objects (e.g. Charles shifts a Pontiac to a Mustang at one point!)? And why is their true state closer to some kind of reptile? It still just about hangs together though, thanks to not taking itself too seriously and having some enjoyable central performances - particularly from the cat, Clovis (the real star of the show!). The effects are a bit dated now, but I still enjoyed the morphing Sleepwalkers; the effects where primitive CG is used, like sucking life force from victims' bodies, is what really lets it down.
A who's who of cameo roles - Tobe Hooper, Clive Barker, John Landis, Joe Dante and King himself all put in an appearance!