After interning her insane husband in a remote psychiatric hospital, book editor Helga Pato returns home by train, where she meets a mysterious man who identifies himself as a psychiatrist.

Luis Tosar
as Martín Urales de Úbeda

Pilar Castro
as Helga Pato

Ernesto Alterio
as Ángel Sanagustín

Quim Gutiérrez
as Emilio

Belén Cuesta
as Amelia Urales de Úbeda

Macarena García
as Rosa

Javier Godino
as Cristóbal de la Hoz

Stéphanie Magnin
as Doctor Linares

Gilbert Melki
as Leandro Cabrera

Javier Botet
as Gárate