Amazon Studios has completed its worldwide acquisition of Garth Davis sci-fi thriller adaptation of Iain Reid’s FOE in a deal Deadline reports to be north of $30M.

Four-time Oscar nominee Saoirse Ronan (Little Women) and Normal People star Paul Mescal were already set to star. Fast-rising Brit actor Aaron Pierre is replacing LaKeith Stanfield on the movie.

The Underground Railroad and Old actor Pierre is on a roll having recently been set for the Lion King prequel and as the lead role in Netflix’s Rebel Ridge.

Iain Reid is represented by Samantha Haywood and Dana Spector of CAA for TV/Film.