Christian Bale as Augustus Landor

Harry Melling as Edgar Allan Poe

Lucy Boynton as Lea Marquis

Toby Jones as Dr. Daniel Marquis

Simon McBurney as Captain Hitchcock

Timothy Spall as Superintendent Thayer

Robert Duvall as Jean-Pepe

Harry Lawtey as Artemus Marquis

Gillian Anderson as Julia Marquis

Charlotte Gainsbourg as Patsy

Hadley Robinson as Mattie

Fred Hechinger as Cadet Randolph Ballinger

Joseph Brooks as Cadet Stoddard

Steven Maier as Cadet Fry

Brennan Keel Cook as Cadet Huntoon

Orlagh Cassidy as Mrs. Fry

Scott G. Anderson as Benny

Gideon Glick as Cadet Horatio Cochrane

Jack Irv as Cadet Hamilton

Matt Helm as Cadet Llewllyn Lee

Mathias Goldstein as Lieutenant Locke

Charlie Tahan as Cadet Loughborough

Bill Cwikowski as Reverend Zantzinger

Agnes Herrmann as Eugenia

Nicholas Bellavia as Lieutenant Robert

John Fetterman as Bearded Man