Thriller · Acorn TV · 2026
The Assassin
What Is The Assassin About?
Keeley Hawes stars as Julie, a retired assassin who's spent years keeping a low profile on a quiet Greek island. When her estranged son Edward, played by Freddie Highmore, turns up looking for answers about his father, the reunion doesn't stay peaceful for long — Julie's past catches up with both of them, forcing mother and son onto the run together and into a conspiracy that puts everything between them to the test.
Cast
Keeley Hawes, known to British TV Hub readers from Bodyguard and Line of Duty, leads as Julie, with Freddie Highmore — in his first major TV role since The Good Doctor — as her son Edward. The supporting cast includes Gina Gershon, Jack Davenport, Alan Dale, Gerald Kyd, Devon Terrell, Richard Dormer, and David Dencik.
How Many Seasons?
The Assassin has one season of six episodes so far. It's new to US audiences via Acorn TV this September, having first aired in full on Prime Video in the UK in 2025.
Is The Assassin Worth Watching?
If you like a thriller built on a strong central relationship rather than pure action, this one delivers — Hawes and Highmore's mother-son dynamic carries the show, and the Greek island setting gives it a distinctive look among British thrillers. It comes from the Fleabag and The Tourist writing team of Harry and Jack Williams, which is a reasonable indicator of its tone and quality.
About the show
The Assassin comes from brothers Harry and Jack Williams, the writing and producing team behind Fleabag and The Tourist. The six-episode series was filmed on location across the Greek islands.
New episodes Mondays through mid-October
All six episodes of Season 1 are rolling out weekly on Acorn TV through mid-October, a slower pace than the show's original UK run, where all episodes were released at once.
Where to watch in the US
Acorn TV
6 episodes · New episodes Mondays through mid-October
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Frequently Asked Questions
Is The Assassin based on a true story?
No. The Assassin is an original thriller created by Harry and Jack Williams, not based on a real person or true events.
Where can I watch The Assassin in the US?
The Assassin streams on Acorn TV in the US, including through the Acorn TV add-on channel on Amazon Prime Video.
How many episodes does The Assassin have?
Season 1 has six episodes, releasing weekly on Acorn TV through mid-October in the US.
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