Netflix has mastered the art of turning suspense into must-watch entertainment. From bingeable horror to twisted thrillers, the platform always knows how to keep viewers hooked. Now it is adding another intense watch to its lineup, a Spanish political thriller packed with secrets and high-stakes undercover drama. She Walks in Darkness is making waves, and judging by the name alone, it promises to be gripping. 

While Netflix keeps its finger on the pulse of our paranoia, this new thriller teases a labyrinth of intrigue lurking just beyond the play button.

She Walks in Darkness has an amazing cast. Susana Abaitua portrays Amaia, an undercover Civil Guard agent who has to make difficult moral choices. Andrés Gertrúdix plays Teniente Coronel Castro, and Ariadna Gil plays María Soledad Iparraguirre, also known as Anboto. In the supporting cast, Iraia Elias and Raúl Arévalo have significant roles. The real weight each actor brings to the story adds complexity and tension to this historical thriller.

As these faces shape the tense shadows of the plot, the story prepares to drag viewers through psychological mazes darker than a cave.

Based on true events, the film follows Amaia's dangerous mission to infiltrate ETA, a Basque separatist group. Set across the 1990s and 2000s, she spends years navigating hidden weapons, safe houses and impossible moral choices. The psychological weight of living undercover shows in every decision she makes and every careful glance she gives. Secrets pile up and reveal a personal cost so heavy that the line between her duty and her true identity starts to disappear.

While historical intrigue fuels the adrenaline, the audience is left to question: how far would they go if the stakes were their very soul?

  The thriller premiered at the San Sebastián International Film Festival before hitting Spanish theaters. Netflix subscribers worldwide can catch it starting October 17, 2025. The film delivers shadowy suspense and looks set to join the ranks of Netflix's best thrillers with its tense storytelling and gripping atmosphere. If you are a fan of political dramas with real stakes, this one is worth adding to your watchlist. The wait is almost over.  

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What are your thoughts on Netflix's She Walks in Darkness and its promise of political intrigue alongside shadowy suspense and decade-spanning undercover drama? Let us know in the comments below.