sentences:  In 2016, he was cast as one of the leads in Audience's "Mr. Mercedes", based on the novel of the same name, opposite Brendan Gleeson.His part was that of Brady Hartsfield, a brilliant young psychopath who decides to engage in a cat-and-mouse game with Gleeson's Bill Hodges.Anton Yelchin had originally been given the role of Hartsfield, but following Yelchin's death in June 2016, it was announced that his role had been recast with Treadaway assuming the part.