Vitoria-Gasteiz, Basque Country, Spain, 2019. Two corpses appear in the crypt of the Old Cathedral. Police officer Unai López de Ayala, an expert in criminal profiling, must hunt down the ritual murderer who has been terrorizing the city for two decades.

Belén Rueda
as Alba

Javier Rey
as Unai

Aura Garrido
as Estíbaliz

Manolo Solo
as Mario Santos

Àlex Brendemühl
as Tasio / Ignacio

Ramón Barea
as Grandfather

Sergio Dorado
as Germán

Pedro Casablanc
as Optician

Joseba Apaolaza
as Medina

Txema Blasco
as Don Tiburcio