Ethan Hawke

Character: Lorenz Hart

Margaret Qualley

Character: Elizabeth Weiland

Bobby Cannavale

Character: Eddie

Andrew Scott

Character: Richard Rodgers

Jonah Lees

Character: Morty Rifkin

Simon Delaney

Character: Oscar Hammerstein II

Patrick Kennedy

Character: E.B. White

Giles Surridge

Character: Sven

John Doran

Character: Weegee

Caitríona Ennis

Character: Cigarette Girl

Ian Dillon

Character: Elizabeth’s Mothers Friend (uncredited)

Brian Briggs

Character: Waiter

Ray Weafer

Character: Maitre'd at Sardi's (credit only)

Cillian Sullivan

Character: Stephen Sondheim

David Rawle

Character: George Roy Hill

Andrew Bennett

Character: Oklahoma City Mayor