Gary Oldman

Herman Mankiewicz

Amanda Seyfried

Marion Davies

Lily Collins

Rita Alexander

Arliss Howard

Louis B. Mayer

Tom Pelphrey

Joseph Mankiewicz

Sam Troughton

John Houseman

Ferdinand Kingsley

Irving Thalberg

Tuppence Middleton

Sara Mankiewicz

Tom Burke

Orson Welles

Joseph Cross

Charles Lederer

Jamie McShane

Shelly Metcalf

Toby Leonard Moore

David O. Selznick

Monika Gossmann

Fräulein Frieda

Charles Dance

William Randolph Hearst

Adam Shapiro

George S. Kaufman

John Churchill

Charles MacArthur

Sean Persaud

Tommy

Paul Fox

Joe Von Sternberg

Tom Simmons

Doctor

Arlo Mertz

Child Star

Lou George

Ed the Gate Guard

John Lee Ames

Grady

Bill Nye

Upton Sinclair

Richmond Arquette

Heckler

David Lee Smith

Sinclair Supporter

Mario Di Donato

A Man's Voice (voice)

Flo Lawrence

Maude Anderson

Randy Davison

Maître D

Leven Rambin

Eve - Shelly's Girlfriend

Rick Pasqualone

Singer

Mark Fite

James Wilson

John Patrick Jordan

Best Original Screenplay Announcer

Ben Mankiewicz

Broadcaster, Academy Awards

Natalie Denise Sperl

Movie Star #2

Craig Robert Young

Charlie Chaplin

Paul Carafotes

Assistant Director

Anne Beyer

Female Party Goer

Sean Donnellan

Martin Butler

Stewart Skelton

News Reel I

Elvy

Starlet #3

Dana Lyn Baron

Wife #3

Cary Christopher

Young Joseph Mankiewicz (uncredited)

Michelle Twarowska

Joan Crawford (uncredited)

Anthony Molinari

Hobo (uncredited)

Daniel Hoffman

MGM Child Star (uncredited)