Harper's first act upon reaching the holiday house is to pick an apple from the tree in the garden and eat it, with clear overtones of Eve. Geoffrey makes it clear when he admonishes her for eating "forbidden fruit." The apple tree is frequently seen through the rest of the film.
Men (2022) was filmed in the United Kingdom, specifically St Katharine Docks, London, and parts of Gloucestershire, including Withington, standing in for Cotson; and a tunnel in The Forest of Dean.
Sonoya Mizuno has a cameo as the police operator. Mizuno previously appeared in Alex Garland's Ex Machina (2014) and Annihilation (2018).
The majority of Alex Garland's previous projects are in the science-fiction genre (though frequently overlapping with the horror or thriller genres). Men (2022) is a folk horror film with explicitly supernatural threats.
The outdoors are always presented in bright vivid greens, as befitting the English countryside. It also underscores the supernatural forces lurking quietly beneath the surface.