The subsequent supernatural happenings—slammed doors, rearranged belongings, yanked limbs—are nothing audiences haven’t seen before, but Wan stages them for maximum heart-in-throat suspense.

...the 70s setting, paired with the cheapish visual effects, helps the thing scramble along like a fleshed-out episode of Scooby Doo.

...revels in great scares well placed: a witch on a wardrobe and a clapping game of hide-and-seek being particularly nerve-jangling examples.