Arliss Howard
as Louis B. Mayer
Tom Pelphrey
as Joseph Mankiewicz
Sam Troughton
as John Houseman
Ferdinand Kingsley
as Irving Thalberg
Tom Burke
as Orson Welles
Joseph Cross
as Charles Lederer
Jamie McShane
as Shelly Metcalf
Toby Leonard Moore
as David O. Selznick
Monika Gossmann
as Fräulein Frieda