Guest Stars Sally Dexter as Older Mileva T.R. Knight as J. Edgar Hoover David Dencik as Niels Bohr Jodhi May as Helen Dukas Nikola Djuricko as Leo Szilard Joshua Akehurst as Hans Albert Einstein (Age 15) Ed Stoppard as Adult Hans Albert Einstein Neal Huff as Robert Oppenheimer Aidan McArdle as Dr. Thomas Harvey Michael Lindall as Agent McKee Dixie Egerickx as Alice Edwards Joseph Arkley as David Bohm Co Starring Nancy Crane as Eleanor Roosevelt Carla Dixon as Evelyn Einstein Sinéad Phelps as Secretary Bob Karper as Field Director Jasmin von der Born as Frieda Einstein Andrew Boyer as Doctor Cornelius Geaney, Jr. as Assistant Director Joshua Glenister as Bernhard Einstein Markus Pfeiffer as Young Hermann Einstein Roy McCrerey as Committee Chair Gary Fannin as Technician Stewart Alexander as Harold Urey Kit Ross as Younger Albert Einstein Bob Boudreaux as Congressman Rankin Howard Lotker as Reporter MaryKathryn Kopp as Nurse Magnus Af Sandeberg as Male Secretary
