"13 times the thrills, 13 times the screams, 13 times the fun!" boldly proclaims the poster of this bizarre and spectral cinematic experiment from the king of sensational cinema: William Castle.

Our tale begins with a modest family that inherits a dilapidated mansion from a mysterious uncle… a mansion inhabited, as one might guess, by thirteen ghosts! But beware, dear audience: these spirits are not visible to the naked eye. To see them, you must wear the extraordinary Ghost Viewer, provided free of charge at the theater entrance! A true stroke of marketing genius, reminiscent of the best traveling shows of the late 19th century.

The ghosts haunting the house are as varied as they are unsettling: a laughing skeleton, a decapitated cook, a spectral lion, and even a murdered acrobat. But don’t expect a Hitchcockian psychological analysis here. This terror is more playful, theatrical, almost like a haunted carnival — and that’s precisely what makes it so irresistibly charming.

The black-and-white photography, with inserts in “ectoplasmic color,” enhances the gothic, fairy-tale atmosphere of the film. The performances are modest yet effective: Charles Herbert convincingly plays the curious, brave boy, while Jo Morrow and Donald Woods round out the family dynamic with grace and composure.

The real star, however, is the audience. The Illusion-O is the true highlight of the show: a red-blue optical filter that lets viewers choose whether to see (or avoid!) the ghosts on screen. A trick worthy of the finest illusionist, it transforms the screening into an interactive game between fear and wonder.

"13 Ghosts" is a small gem of 1960s entertainment cinema: naive, creative, and delightfully over-the-top. It’s not a film to give you nightmares… but a haunted carousel that delivers smiles and a few shivers for the whole family. Perfect for a light-hearted evening at the movies, with your heart open and your eyes full of wonder.

“If cinema is magic, then William Castle is one of its most skillful conjurers.”