Prime Video has announced its new psychological thriller series 56 Days, starring Dove Cameron and Avan Jogia, will premiere on Wednesday, February 18, 2026. All eight episodes of the series, based on Catherine Ryan Howard’s bestselling novel, will be released globally in over 240 countries and territories.
The announcement, made on December 9, 2025, was accompanied by the first official images from the series. The project is a major collaboration between Amazon MGM Studios and Atomic Monster, the production company founded by horror specialist James Wan.
Worldwide Release Dates and Platforms
The series will have a unified global release. Subscribers worldwide will be able to stream all episodes starting on February 18, 2026, exclusively on Prime Video.
The streaming service has confirmed the series will be available in more than 240 countries and territories, ensuring a simultaneous launch for international audiences. This release strategy positions 56 Days as a binge-ready event for the platform.
Plot and Source Material
56 Days follows Oliver Kennedy (Avan Jogia) and Ciara Wyse (Dove Cameron), who begin an intense romantic relationship after a chance meeting in a supermarket. The story unfolds across two timelines.
The primary mystery begins 56 days later, when homicide investigators arrive at Oliver’s apartment to find an unidentifiable body that has been brutally murdered and intentionally left to decompose. The narrative intercuts between a single, intense day of police investigation in the present and the escalating, twisted trajectory of the couple’s affair in the past. The central question driving the thriller is: Did Oliver kill Ciara, or did Ciara kill Oliver?
The series is adapted from Irish author Catherine Ryan Howard’s 2021 novel of the same name. While the original book was set in Dublin during the COVID-19 lockdowns, the television adaptation will not take place during the pandemic. Howard serves as a co-executive producer on the series.
Full Series Cast and Characters
The series features a mix of emerging stars and established actors in key roles.
Lead Cast:
- Dove Cameron plays Ciara Wyse, a woman who becomes dangerously entangled in a fast-moving romance. Cameron is known for her roles in Disney’s Descendants and Schmigadoon!.
- Avan Jogia plays Oliver Kennedy, an architect whose new relationship takes a dark turn. Jogia’s previous work includes Victorious and The Stranger.
Supporting Cast:
- Karla Souza plays Lee Reardon, a detective investigating the case. Souza is recognized for her role in How to Get Away with Murder and is an International Emmy Award winner.
- Dorian Missick plays Karl Connolly, Lee’s police partner.
- Additional cast members include Megan Peta Hill as Shyla, Patch Darragh as Dan Troxler, and Jesse James Keitel.
Behind the Scenes: Writers and Producers
The series was developed by Lisa Zwerling and Karyn Usher, who also serve as writers and executive producers. The project brings significant horror and thriller expertise with James Wan (creator of The Conjuring and Saw franchises) on board as an executive producer through his company, Atomic Monster. He is joined by Atomic Monster’s Michael Clear and Rob Hackett.
“The series is both a unique crime story and a riveting, sexy, psychological thriller,” according to the official synopsis from Prime Video.
The score is composed by Nathan Barr, whose previous work includes The House of the Devil and The Americans. The series is a co-production of Amazon MGM Studios and Atomic Monster.
Production Background and Development
56 Days was officially greenlit by Prime Video in December 2023. The lead casting of Dove Cameron and Avan Jogia was confirmed in May 2024. Additional cast members joined the project in June 2024.
Filming took place in Montreal, Canada, in mid-2024. The series was originally known under the working title Obsession before being officially named 56 Days.
What to Expect and First-Look Images
The first promotional images released by Prime Video offer a glimpse into the series’ tone. The photos depict Dove Cameron and Avan Jogia as their characters, Ciara and Oliver, capturing moments of intimate connection that hint at the passionate and dangerous relationship at the story’s core.
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With its dual-timeline structure, the series aims to blend elements of a police procedural with a deep psychological exploration of a relationship built on secrets and lies. The full-season drop on release day aligns with a growing trend for event-style television designed for extended viewing.
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