Jack Hill’s Spider Baby is a strange, grotesque, and undeniably ambitious horror-comedy that teeters between campy fun and genuinely disturbing imagery. Dubbed “the maddest story ever told,” the film centres on the Merrye family, whose hereditary condition causes them to regress mentally as they age, resulting in murderous, childlike behaviour.

Lon Chaney Jr., in one of his final roles, anchors the film as the loyal caretaker Bruno. Chaney’s performance is surprisingly heartfelt, lending a sense of tragedy to the Merrye family’s twisted plight. His rendition of the haunting theme song only adds to the film’s offbeat charm.

The standout performances come from Jill Banner and Beverly Washburn as the deranged Merrye sisters, whose blend of innocence and malice creates an unsettling dynamic. Sid Haig also makes a memorable appearance as the simple-minded but dangerous Ralph.

While the premise is intriguing and the black humour is effective in places, Spider Baby struggles to maintain its tone. The low budget is evident in the uneven production quality, and the narrative often feels disjointed. Hill’s direction shows flashes of brilliance, but the film ultimately feels more like an experiment than a fully realised work.

Despite its shortcomings, Spider Baby has developed a cult following for its unique vision and daring approach. It’s a flawed but fascinating oddity, worth a watch for fans of offbeat horror looking for something different.

• Saul Muerte