My Son is a gripping mystery thriller that follows Edmond Murray (James McAvoy), a man who returns to the Scottish Highlands after receiving a distressing call from his ex-wife, Joan Richmond (Claire Foy), about their 7-year-old son, Ethan, who has gone missing from a remote campsite. As the investigation unfolds, Edmond becomes increasingly suspicious of Joan's new partner, Frank (Tom Cullen), and begins to uncover unsettling truths. Notably, McAvoy's performance is entirely improvised, as he was not provided with a script, adding a layer of authenticity and tension to the film's portrayal of a father's desperate search for his child.
My Son - official trailer
Watch My Son on Amazon Prime Video