The Boy in the Iron Box


The Boy in the Iron Box is an upcoming American supernatural dark fantasy horror film written and directed by David Prior. It is based on the short story of the same name written by Guillermo del Toro and Chuck Hogan. The film stars Rupert Friend, Kevin Durand, Jaeden Martell, Chris Petrovski, Aksel Hennie, Arnas Fedaravicius, Eugene Prokofiev, Jóhannes Haukur Jóhannesson, and Julian Kostov.

Premise

A plane carrying a team of mercenaries crash-lands on a remote snowy summit. When they come across a maze-like stone fortress, it's no refuge from the wolves and the freezing wind. As terror takes a new shape, the real battle for survival begins.

Cast

Production

In September 2025, David Prior was hired to write and direct the Netflix film The Boy in the Iron Box, based on the short story of the same name by Guillermo del Toro, who also produces the film, via Necropia Entertainment. Later that same month, Rupert Friend, Kevin Durand, and Jaeden Martell were cast in undisclosed roles. In October, Chris Petrovski, Aksel Hennie, Arnas Fedaravicius, Eugene Prokofiev, Jóhannes Haukur Jóhannesson, and Julian Kostov rounded out the cast. Principal photography began on October 20, 2025 in Toronto, and was expected to wrap on January 13, 2026.