[5] Ben and Tina are a young engaged New York couple and passionate YouTube contributors who are travelling Europe and seeking out reputedly haunted houses to live-record their experiences.

A local, Pierre, offers to take them to an isolated branch of the lake in the forest of Chanteloup, an area which was artificially submerged in 1984 to prevent frequently recurring, devastating floods.

In addition, in some of the rooms they find lots of photos, posters and news articles showing missing children, as well as satanic symbols and a score of violent scratches at the front door post.

When Tina finds him, he leads her to a hidden sitting room in the basement where Sarah, through Ben and a gruesome film reel, reveals that Mr. Montégnac and Pierre kidnapped children from the surrounding area to use as satanic sacrifices.

Principal photography took place from 27 January to 13 March 2020 and from 15 to 26 June 2020 at Studios Lites (in Vilvoorde, Belgium), in the Occitanie region (in the, Raviège and Saint Peyres lakes) from 6 to 10 July 2020.

[6] Meagan Navarro, of Bloody Disgusting, gave the film 3.5/5 stars, and wrote that "The Deep House offers a slow, dark descent that builds to a satisfying conclusion (...) successfully blending two subgenres that couldn’t be further apart and execute it with impressive ambition.