Emma Watson as Emma Watson

— —

Thomas Sangster as Thomas Sangster

— —

Nina Dobrev as Ema Penderghast

— —

Alex Pettyfer as Daniel Pennsylverst

— —

Ezra Miller as Charlie Middwick

— —

Noah Shnapp as Maximillen Watson

— —

Emma Stone as Catharina De Luca

— —

Kiernan Shipka as Ruby Willer

— —

Ross Lynch as Will Van Alphen

— —

Dylan O'Brien as Dylan O'Brien

— —

Halston Sage as Lyvia Herghuson

— —

(d'autres personnages s'ajouteront au cast en fonction de l'évolution de l'histoire.)