56 Days is an American thriller television series developed by Karyn Usher and Lisa Zwerling and is based on Catherine Ryan Howard's novel of the same name. The series is executive produced by James Wan for Amazon Prime Video and stars Dove Cameron and Avan Jogia. The series premiered on February 18, 2026. == Premise == Oliver Kennedy and Ciara Wyse start an intense relationship after meeting in a supermarket but police fear it has ended in murder after an unidentifiable body is found. == Cast == Dove Cameron as Ciara Wyse Avan Jogia as Oliver Kennedy Megan Peta Hill as Shyla Dorian Missick as Karl Connolly Karla Souza as Lee Reardon Patch Darragh as Dan Troxler Kira Guloien as Jane Miller Celeste Oliva as Camille Russo Jesse James Keitel as Alison Meadows Matt Murray as Kevin Sullivan David Klein as Declan Kelly Alec Albert as Mitch == Episodes == == Production == The series is produced by Amazon MGM Studios and Atomic Monster and was commissioned in December 2023. The series is written and executive-produced by Lisa Zwerling and Karyn Usher. James Wan is one of the executive producers, along with Michael Clear and Rob Hackett at Atomic Monster. Nathan Barr composed the score for the series. In May 2024, Dove Cameron and Avan Jogia were cast in the lead roles of Ciara Wyse and Oliver Kennedy. In June 2024, Megan Peta Hill, Dorian Missick, Karla Souza, Patch Darragh, Kira Guloien, Celeste Oliva, Jesse James Keitel and Matt Murray joined the cast. Filming took place in Montreal in June 2024. == Release == 56 Days premiered on February 18, 2026, on Amazon Prime Video, with all eight episodes released at once. == Reception == On the review aggregator website Rotten Tomatoes, the series holds an approval rating of 62% based on 21 reviews. Metacritic, which uses a weighted average, gave it a score of 54 out of 100 based on 10 critics, indicating "mixed or average" reviews. == References == == External links == Official website 56 Days at IMDb