Guest Stars Daniel London as J. Robert Oppenheimer Mamie Gummer as Nora Corey Allen as Theodore Sinclair Jason Ralph as Stan Bill Camp as William Hogarth Neve Campbell as Kitty Oppenheimer Fiona Dourif as Jean Tatlock Co Starring Matt Page as G.I. Weaver Clay Space as Tillman Dave Maldonado as Warden Wells Jessica Marie Osbourne as Constance Matt Timmons as SF Law Enforcement Ben Ziegler as Hankins Mark Feigenbutz as Dudley Barbara Geary as Waitress Rob Tode as Dr. Crippin Kristin Hansen as Nancy