Logan Lerman as Sidney Hall

Elle Fanning as Melody

Kyle Chandler as The Searcher

Michelle Monaghan as Mrs. Hall

Blake Jenner as Brett Newport

Nathan Lane as Harold

Margaret Qualley as Alexandra

Yahya Abdul-Mateen II as Duane

Tim Blake Nelson as Johan

Janina Gavankar as Gina

Darren Pettie as Gerald Hall

Alex Karpovsky as Mr. Bauer

Michael Chen as Lewis

Avery Whitted as Henry Crowe

Ariane Rinehart as Darcy

Sean Cullen as Judge Newport

Mercedes Herrero as Mrs. Sennett

Lora Martinez-Cunningham as Hospital Administrator

Sasha Hutchings as Harold's Secretary

Peter Francis James as Dr. Baum

Christine Devine as News Anchor

Fredi Walker-Browne as Head Nurse

Fredrick Lopez as Inmate

Jazzy Kae as Lab Partner

Irania Reyes as Girl

Christina Brucato as Jeanine

Azumi Tsutsui as Japanese Interviewer

John Trejo as Police Officer

Ruben Rivera Laguna as Deputy

Charlie Le Grice as Reporter 1

Zakiya Young as Reporter 2

Jason Tottenham as Reporter 3

Daniel Morgan Shelley as Officer 1

Lee Garrett as Officer 2

David Alan Basche as Senator Dale

Michael Drayer as Max

Ryan Willard as Student

Adrian Acosta as Hospital Staff (uncredited)

Richard Beal as Town Cowboy (uncredited)

Ludovic Coutaud as Carnival Goer (uncredited)

Cassandra Rochelle Fetters as Reporter (uncredited)

William Greely as Boom Operator / Cameraman (uncredited)

Hannah Hartwell as High School Student (uncredited)

Michael D. Joseph as Carnival Goer (uncredited)

Kelly V. Lucio as Patient (uncredited)

Will MacAdam as Senior Librarian (uncredited)

Fatima Ptacek as Self (uncredited)

Stephanie Purpuri as Cocktail Party Admirer (uncredited)

Cris Williams as Student (uncredited)