George MacKayJack Marrowbone

Anya Taylor-JoyAllie

Charlie HeatonBilly Marrowbone

Mia GothJane Marrowbone

Matthew StaggSam Marrowbone

Nicola HarrisonRose Marrowbone, Mother

Kyle SollerTom Porter

Tom FisherSimon Fairbairn, Father

Myra Kathryn PearseMolly

Paul JessonDoctor

Robert StrangeMonster

Laura Brook

Adam Quintero

Sergio G. SánchezDirector & Writer

J. A. BayonaExecutive Producer

Belén AtienzaProducer

Álvaro AugustinProducer

Ghislain BarroisProducer

Sandra HermidaExecutive Producer

Jorge TucaProducer

Paloma MolinaExecutive Producer