Overview

• The high-budget Spanish sci‑fi thriller from Álex Pina and Esther Martínez Lobato premiered on Netflix on September 19, 2025.
• FlixPatrol-cited data report about 3.7 million views in the first three days, trailing recent Spanish launches such as 'Berlín' noted at 11.3 million.
• Despite the modest start, outlets say the series has reached daily Top 1 positions in several countries and topped charts in roughly three dozen markets.
• Coverage spotlights a mixed Spanish–Argentine ensemble led by Miren Ibarguren, Joaquín Furriel, Natalia Verbeke and rising talents including Pau Simón, whose role required intensive physical training.
• Reports in Valencia highlight visual parallels between the show's lake‑access tower and the Tous reservoir, though any direct production tie remains unconfirmed.