'Witchcraft' aka 'Las Casa 4' (1988) – Fabrizio Laurenti.

Maestro Joe D'Amato's infamously promiscuous Filmirage company produced a great many provocative, singularly strange, future-proofed, supernaturally skewed shockers during the gleefully gore-ious Video haze of the 1980s, not least of witch being schlock master-blaster, Fabrizio 'Killer Crocodile' Laurenti's macabre, haemoglobin-happy, Linda Blair scary, kaleidoscopically kooky, heroically Hasselhoff heavy, surprisingly vicious 80s methamphetamine mental Schlock masterpiece 'La Casa 4'. 

Atmospherically set within an isolated, witch-haunted, long derelict domicile, drearily perched upon a no less forbidding, storm-lashed island. The bickering family, and two furtive trespassers fatefully discover that the ancient legend regarding the vengeful spirit of wickedly warped Witch (Hildegard Knef) is disturbingly real, and the infamous 'Witch-light' guttering grimly in the attic window is an unwelcoming beacon that precipitates a diabolical doom for all those who enter this sinister, darkly bewitched locale! Fabulous fear-master Fabrizio Laurenti's spell-bindingly bloody, imaginatively gruesome shocker is all too Hofften overlooked, with the head-spinningly spooktacular presence of big-haired scream queen Linda Blair, a genuinely menacing turn by charismatic German screen icon Hildegard Knef, and stunning score by maestro Carlo Maria Cordio proving wholly irresistible. The rewardingly bizarre acting choices, visceral gore FX, and deliciously deviant climax, Witchcraft's surrealistic fun-house histrionics will draw you into its ghoulishly captivating, brain-warpingly wicked web of sin-sticky B-horror madness!