John Cho and Alexandra Daddario are set to star in horror-thriller Inground.

The logline reads: “A recently divorced father attempts to reconnect with his young son by building a swimming pool in his backyard that they can both enjoy over the course of a long, hot summer. What begins as an exciting project turns into a terrifying nightmare.”

Aaron Katz (Gemini) is directing from a screenplay by Dan Dworkin (American Horror Story).

Ridley Scott, Michael Pruss, and Sam Roston will produce for Scott Free Productions (Gladiator II). Joshua Harris and Nathan Klingher will produce for Gramercy Park (The Surfer), which is financing. 

Production is being lined up for March 2026. CAA Media Finance represents the film’s domestic distribution rights, while north.five.six. is handling international.

Michael Rothstein, Samuel Hall, and Warren Goz are executive-producing for north.five.six., alongside Mark Fasano and Ford Corbett for Gramercy Park Media.

Deadline first reported on the film.