Jesse Eisenberg as Charlie Banks

Jason Ritter as Mick Leary

Eva Amurri as Mary

Christopher Rodriguez Marquette as Danny Bowman

Sebastian Stan as Leo Reilly

Gloria Votsis as Nia

Danny A. Abeckaser as Arresting Officer

Declan Baldwin as Detective Lazaroff

Emily Boisseau as Girl In Danny's Class

Dennis Boutsikaris as Mr. Banks

Olivia Keister as Michelle

Amanda George as Glee Club Member

Patrick Pitu as Suicide Witness

Steven Hinkle as Young Charlie

Hunter Gallagher as Older Kid