If you’re always searching for a gripping crime drama to dive into, there’s a new series that deserves a spot on your watchlist. The third season of The Twelve has officially arrived on ITVX, bringing another tense and twist-filled courtroom mystery for viewers to unravel.
The new eight-episode installment, titled Cape Rock Killer, sees Sam Neill return as celebrated defence barrister Brett Colby SC, who finds himself at the center of a highly personal murder case with life-changing consequences.
© ITVIf you love twisty legal thrillers, it’s worth adding the show to your watchlist. But first, find out all you need to know about the series below…
What is Cape Rock Killer about?
The third season, which originally debuted in Australia in August 2025, follows Brett Colby as he becomes involved in a deeply personal case when a longtime friend finds herself connected to a shocking murder investigation.
According to the official synopsis: “The Twelve: Cape Rock Killer is unlike any other as things get personal for Brett Colby (Sam Neill) after he is thrust into a murder trial to defend the husband of a lifelong friend accused of a heinous murder.”
![Cape Rock Killer: Brett Colby [Sam Neill]](https://images.hellomagazine.com/horizon/original_aspect_ratio/d3c608ccbe6a-caperockkillersr1001.jpg)
© ITV / Easy Tiger Productions“As the trial unravels a deeper mystery, a 1968 cold case murder of two teens is re-opened, and the twelve jurors sworn in for the trial find their own lives changed by the experience.”
What have viewers said about The Twelve?
Although the series has drawn mixed reactions from critics — with the first season receiving two stars from The Guardian and three stars from The Standard — many viewers have been far more enthusiastic, describing it as “brilliant” and “fantastic.”
After season two premiered, fans took to social media to share their excitement about the drama. “Just finished both series of #TheTwelve… Brilliant,” one viewer wrote, while another revealed they were so engrossed in the story that they ended up binge-watching the entire show.
© David Dare ParkerA third fan added: “Excellent legal drama. The entire cast was absolutely outstanding and the storyline, just fantastic! Bring on season 3 please!”
Who stars in Cape Rock Killer?
Sam Neill (Jurassic Park) leads the cast as Brett Colby SC.
He’s joined by Danielle Cormack (The Last Anniversary) as Gabe Nicholls, Eryn Jean Norvill (Home and Away) as Amanda Taylor, Sarah Peirse (The Letdown) as Beth Chaplin, William Zappa (The Dry) as Alan Chaplin and Ewen Leslie (Pieces of Her) as Andrew Retsis.
Rounding out the cast are Phoenix Raei, Nathalie Morris, Bessie Holland and Paul Tassone.
Cape Rock Killer is available to stream on ITVX now.
Other gripping courtroom dramas to stream now
- Showtrial – This tense and twisty anthology series follows high-profile murder cases under the glare of the media spotlight. While season one follows a privileged university student who is accused of the murder of one of her peers, series two sees a police officer on trial for the hit-and-run murder of a climate change activist. Watch on BBC iPlayer.
© Peter Marley
