Daniel Brühl as Salvador Puig Antich

Tristán Ulloa as Oriol Arau

Leonardo Sbaraglia as Jesus

Leonor Watling as Cuca

Ingrid Rubio as Margalida

Celso Bugallo as pare de Salvador

Mercedes Sampietro as mare de Salvador

Olalla Escribano as Imma Puig

Carlota Olcina as Carme Puig

Bea Segura as Montse Puig

Andrea Ros as Merçona Puig

Jacob Torres as Santi Soler (Petit)

Joel Joan as Otiol Solé

Pablo Derqui as Jordi Solé

Oriol Vila as Ignasi Solé

Diana Gómez as Nena

Biel Duran as Pons Llobet

Sergi Páez as Niño en la cola del cine (uncredited)