Guest Stars T.R. Knight as J. Edgar Hoover David Dencik as Niels Bohr Nikola Djuricko as Leo Szilard Jolyon Coy as Max Laue Jodhi May as Helen Dukas Robert Picardo as Abraham Flexner Ania Bukstein as Margarita Konenkova Adam Garcia as Moe Berg Christian Rubeck as Werner Heisenberg Rob LaBelle as Henry Morgenthau John Sackville as R. Davis Halliwell Karel Dobrý as Mikhail Ivanushkin Co Starring Nancy Crane as Eleanor Roosevelt Lucy Farrett as Older Margot Zita Téby as Older Ilse Jim High as British Guard Miles Richardson as Vannever Bush Mitchell Mullen as Franklin Roosevelt Bryan Bounds as Judge Tom Knight as Waspy Donor Daniel Kötter as Gestapo Officer Steve Mirer as Doctor Timo Willman as Young Nazi Charlie Field as Carl Von Weizsacker Gunnar Cauthery as Joseph Goebbels Stephen Chance as Paul Scherrer Georg Nikoloff as Sergei Konenkov David Hunt as General Leslie Groves
