All four episodes of the limited series will be available on Thursday, November 6.
The series brings to life the epic and stranger-than-fiction true story of James Garfield (Shannon), reluctant 20th President of the United States, and his greatest admirer Charles Guiteau (Macfadyen) - the man who would come to kill him.
In addition to Shannon and Macfadyen, the limited series stars Nick Offerman, Bradley Whitford, Shea Whigham and Betty Gilpin.
Guest stars include Alistair Petrie, Archie Fisher, Barry Shabaka Henley, Ben Miles, Kyle Soller, Laura Marcus, Paula Malcomson, Shaun Parkes, Tuppence Middleton, Vondie Curtis Hall and Željko Ivanek.
Mike Makowsky developed the series based on the novel "Destiny of the Republic" by Candice Millard. He executive produces with David Benioff, D.B. Weiss, Bernie Caulfield and director Matt Ross.
