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Season 1 – Day One

Play trailer Poster for Season 1 – Day One Mar 2026 Mystery & Thriller Play Trailer Watchlist
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Day One — Season 1

Critics Reviews

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Archi Sengupta LeisureByte.com Mar 17
2/5
The series is entertaining to a degree, although there's nothing special about it. Go to Full Review Juan Pablo Russo EscribiendoCine Mar 16
6/10
Day One has a powerful premise... But instead of exploring this territory, it opts for the safer route of entertainment. [Full review in Spanish] Go to Full Review Read all reviews
Day One — Season 1

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Cast & Crew

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Álex González

Ulises Albet

Jordi Mollà

Diskin

Asier Etxeandia

Samuel Barrera

Renata Notni

Actor

Ivan Massagué

Salvador

Melina Matthews

Actor

Episodes

Episode 1 Aired Mar 13, 2026 Samuel Ulises has lived for ten years cut off from the world, secluded in a farmhouse, devoted to denouncing the dangers of technological progress; a former prodigy of the tech sector and founder of a promising start-up, he left Barcelona after the death of his younger sister, a tragedy that pushed him to break with his partner Samuel, and with Paula, the love of his life; his retreat is interrupted when he receives a video message: Samuel asks for help to decrypt a file called Pandora. Details Episode 2 Aired Mar 13, 2026 Salvador Ulises confirms that the Pandora file Samuel told him about is not in the old start-up, and that the AI his friend left programmed is not of much help; he decides to take the risk of going back out onto the streets. Details Episode 3 Aired Mar 13, 2026 Paula After managing to escape from Biran, Ulises asks Rebeca for the rest of the videos from the day Samuel was murdered, only to discover that they have been deleted. Details Episode 4 Aired Mar 13, 2026 Rebeca At police headquarters, Rebeca is interrogated by Salvador while Moreno's team searches the start-up premises, the scene of Paula's murder; Rebeca defends Ulises' innocence. Details Episode 5 Aired Mar 13, 2026 Beth Ulises and Rebeca return to the start-up premises at night despite the police seal; they are going to retrieve an old car; they need it to get to the synchrotron. Details Episode 6 Aired Mar 13, 2026 Anna Ulises drives toward Diskin's headquarters while Moreno holds Rebeca at gunpoint in the back seat; Beth takes her first decisive step toward rebelling against Diskin. Details
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Day One — Season 1

Day One View more photos

Season Info

Director
Víctor Cuadrado, Marta Pahissa
Executive Producer
Cèsar Martí, Conxa Orea, Cristina Pons, José Velasco
Screenwriter
Cristina Pons, Luis Arranz, Luis Moreno, Juan Salvador López
Network
Prime Video
Genre
Mystery & Thriller
Original Language
European Spanish
Release Date
Mar 13, 2026