: Edmond Murray (McAvoy) is an absentee father who travels to the Scottish Highlands after his 7-year-old son, Ethan, disappears from a campsite. He reunites with his ex-wife, Joan (Foy), and eventually takes the investigation into his own hands when the official police efforts stall.

The 2021 thriller , starring James McAvoy and Claire Foy, is an experimental remake of the 2017 French film Mon Garçon . The most distinctive feature of the production is that James McAvoy was not given a script or dialogue ; he had to improvise his entire performance in real-time, reacting to the mystery as it unfolded around him. Movie Overview

Critical reception was , with a 38% score on Rotten Tomatoes . My Son Movie Review - Common Sense Media

: While the rest of the cast and crew had a script and knew the plot, McAvoy was kept in the dark to ensure his reactions were as authentic as possible. Review Summary