One of my favourite series this season. Mr. Mercedes is an American mystery thriller television series based on the novel of the same name by Stephan King . It premiered on the Audience network on August 9, 2017. David E. Kelley is the showrunner and it stars Brendan Gleeson and Harry Treadaway Genre Hard -Boiled-Detective Based on Mr. Mercedes by Stephen King Developed by David E. Kelley Directed by Jack Bender Starring Brendan Gleeson Harry Treadaway Justine Lupe Mary -Louise Parker Country of origin United States Original language(s) English No. of seasons 1 No. of episodes 10 Plot Retired detective Bill Hodges is still haunted by the unsolved case of "Mr. Mercedes," who claimed sixteen lives when he drove a stolen Mercedes through a line of job-seekers at a local job fair. Meanwhile, brilliant young psychopath Brady Hartsfield, the real Mr. Mercedes, reemerges to focus his attention on Hodges. What begins as an online cat-and-mouse game between the two soon has deadly real-life consequences as an increasingly desperate Hartsfield becomes bent on leaving his mark on the world.