This sex-filled exploitation favorite has bounced from one double-billing to the next, undergoing numerous re-titlings (including Bride of Satan and Fury of the Succubus) in the process. It stars Lana Wood as a frustrated housewife who begins having nightly trysts with a tall, dark stranger... who, of course, turns out to be Satan himself. Thus begins her descent into dementia, as she begins to distance herself even further from her husband and kids (if that were possible) while painting portraits of her enigmatic new lover. For reasons never detailed in the film, there is a fully-functional guillotine in the cellar, and it's only a matter of time before heads begin to roll. Assorted devil-worshippers pop up out of nowhere for a confusing climax. Not a bad little time-waster, this film relies more on nudity than scares, with a dollop of gore for good measure. Britt Ekland fans be warned: despite her prominent billing in the credits, her role barely amounts to a walk-on.
~ Cavett Binion, All Movie Guide