Quartile rating: 6.5/10 · 1 rating
While diving in a remote French lake, a couple of YouTubers who specialise in underwater exploration videos discover a house submerged in the deep waters. What was initially a unique finding soon turns into a nightmare when they discover that the house was the scene of atrocious crimes. Trapped, with their oxygen reserves falling dangerously, they realise the worst is yet to come: they are not alone in the house.
The Deep House earns genuine distinction for its audacious central conceit — executing a haunted-house horror film entirely underwater — and the cinematography is legitimately exceptional, with claustrophobic, eerily lit underwater photography that creates sustained dread in a way few films have attempted. The novelty of merging found-footage, haunted-house, and scuba-diving genres is singular and well-executed on a craft level. However, the plot is thin and derivative once the supernatural element kicks in, leaning on familiar haunted-house and satanic-ritual tropes without subverting them. The acting is serviceable but unremarkable, and the ending disappointingly retreats into genre convention rather than capitalizing on the unique setup's potential.