Unai López de Ayala, a former police expert in criminal profiles, returns to work after the death of his pregnant wife in a car crash. He's tasked with solving a series of murders with the same MO as a former TV host, Tasio Ortiz de Zarate, who was arrested for similar crimes 20 years ago. As Unai works with his partner Estíbaliz to uncover the truth, he also navigates his personal life, including a romantic attraction to his new colleague Alba, who is already married. As the investigation unfolds, Unai and Estíbaliz must interview Tasio and his twin brother Ignacio, while also following new leads and uncovering dark secrets from the past.

Twin Murders: The Silence of the White City
A brutal crime spree re-erupts, prompting a seasoned detective to re-open a case from the past, as a cunning and relentless serial killer targets victims with calculated precision.