Peacock has unleashed a heartwrenching trailer for the feature ‘My Son’, in which James McAvoy was only aware of the very basics of his character and had to improvise his performance in real-time.

Driving in the heart of the Highlands, Edmond Murray (James McAvoy) receives a call from his ex-wife (Claire Foy), in tears. Their 7-year-old son went missing from a campsite. Soon it becomes clear that the child was kidnapped and the parents give way to despair.

An English adaptation of the 2017 French film is once again directed by Christian Carion, Claire Foy, Gary Lewis and Tom Cullen star alongside McAvoy.

Also in trailers – Luke Wilson & Martin Sheen star in trailer for ’12 Mighty Orphans’

The film hits US streamer Peacock on September 15th. Trailer time.