Ben Lloyd-Hughes

as Francis Crick

as Julian

as Franz Muller QC (2 episodes)

as Josh (6 episodes)

as Jerome (3 episodes)

as Allen Ginsberg (5 episodes)

as Ben Gascoigne (1 episode)

as Tom

as James (6 episodes)

as Jean-Michel Lintillac

as Greg Grayson (4 episodes)

as Chuck Knoah

as Alexander Colbourne (12 episodes)

as Jackson Sayers

as Dr. Don McQueen

as Mark Bolland (7 episodes)

as Freddie (4 episodes)

as Rupert Collins

as Tsar Alexander (2 episodes)

as David Garnett (3 episodes)

as Will

as Alan Rosenthal

as Will

as Bentley Drummle

as Rob McAloon (3 episodes)