The Twelve Season 3 Cast: Full List of Actors and Characters

Small-town murders pull you in, especially when the people deciding the case are your neighbors. That’s the hook of The Twelve, and its third season, Cape Rock Killer, brings a fresh jury, a new mystery, and familiar faces back to the screen.

Seasons aired: 3 (as of 2025) ·
Series type: Anthology crime drama ·
Season 3 main cast count: 9+ regulars including Sam Neill ·
Premiere date season 3: August 4, 2025 (Australia) ·
Episode count season 3: 8 episodes

The table below outlines the key facts about the series, from its premiere to the current season.

Who are the main actors in The Twelve season 3?

Sam Neill as Brett Colby

• Sam Neill returns as defense barrister Brett Colby SC, a role he originated in season 1 (Foxtel Group).
• Colby is the central returning character linking the anthology seasons.

Danielle Cormack as Gabe Nicholls

• Danielle Cormack joins the cast as Gabe Nicholls, a new character in the Cape Rock Killer storyline (Foxtel Group).

Eryn Jean Norvill as Amanda Taylor

• Eryn Jean Norvill plays Amanda Taylor, a key figure in the season’s murder case (Foxtel Group).

The pattern: The returning lead Sam Neill anchors the legal perspective, while newcomers Danielle Cormack and Eryn Jean Norvill bring fresh energy to the jury and the victim’s story.

Who is the Cape Rock Killer in The Twelve season 3?

The Cape Rock Killer is the central mystery of season 3. According to the Foxtel Group press release, the season follows a jury deliberating over a series of murders in the coastal town of Cape Rock. The identity of the killer is deliberately kept hidden until the finale.

Identity of the Cape Rock Killer

• The killer is a character played by one of the main cast members.
• Official sources have not revealed the identity, making it a spoiler-free watch.

Role in the season plot

• The Cape Rock Killer case drives every episode, with the jury weighing evidence across the eight-episode run.
• Sam Neill’s Brett Colby defends the accused, while Gabe Nicholls (Danielle Cormack) is a juror with a personal connection.

The trade-off: Keeping the killer secret from audiences until the final act builds suspense but requires viewers to pay close attention to every character’s testimony.

Who played Leah in The Twelve season 3?

The character Leah appears in season 3, but the actress who plays her has not been officially confirmed by Foxtel or Screenwest. According to the IMDb cast list, Leah is listed among the supporting characters, but the performer’s name is still unverified.

Actress for Leah

• IMDb suggests a possible credit, but no reliable source has named the actress as of publication.

Leah’s role in the season

• Leah appears to be a witness or a friend of the victim Amanda Taylor.

The implication: Because the actress isn’t publicly confirmed, fans looking for a complete cast list will need to wait for official credits to air.

Who is the girl in the wheelchair in The Twelve season 3?

One of the most talked-about characters in season 3 is a young woman who uses a wheelchair. Neither the Screenwest announcement nor Foxtel’s press release identify the actress or character name.

Character in wheelchair

• She is shown in promotional material as a juror or a key witness.

Actress name

• Despite speculation, her identity remains unconfirmed by official sources.

The catch: The lack of confirmation around this character has led to fan theories, but as of now, no verified source has named the actress.

How did season 3 of The Twelve end?

Season 3 finale plot

• The finale reveals the Cape Rock Killer’s identity, resolving the central courtroom drama.
• According to Variety Australia, the season concludes with a verdict that changes the community.

Resolution of the Cape Rock Killer storyline

• Brett Colby delivers a closing argument that sways the jury.
• The final episode aired in 2025 on Foxtel.

Why this matters: The ending reinforces the show’s theme that justice in a small town is rarely black and white—a trade-off between legal truth and communal peace.

Timeline: The Twelve season 3 release

• 2022: The Twelve season 1 premieres on Foxtel.
• 2024: Season 2 airs.
• December 2024: Screenwest announces cast for season 3 (Cape Rock Killer) (Screenwest).
• August 4, 2025: Season 3 premieres on Foxtel (Variety Australia).

What’s confirmed and what’s unclear

Confirmed facts

• Sam Neill stars as Brett Colby in season 3.
• Danielle Cormack plays Gabe Nicholls.
• Eryn Jean Norvill plays Amanda Taylor.
• Sarah Peirse plays Beth Chaplin.
• Season 3 is titled Cape Rock Killer.
• Premiered August 4, 2025 on Foxtel.

What’s unclear

• Exact role of William Zappa.
• Exact role of Ewen Leslie.
• Exact role of Phoenix Raei.
• Identity of the girl in the wheelchair.
• Actress playing Leah.

Quotes about The Twelve season 3 cast

“We are thrilled to announce the cast for the third season of The Twelve: Cape Rock Killer. Sam Neill returns alongside a stellar ensemble of Australian talent.”

Foxtel Group press release

“The third season of Foxtel’s acclaimed anthology series The Twelve, subtitled Cape Rock Killer, premiered on Sunday, August 4, with Sam Neill reprising his role as Brett Colby SC.”

Variety Australia

The pattern in these announcements: official sources emphasize both the returning lead and the fresh ensemble, signaling that the anthology’s formula—a legal case with a deeply personal jury—is still the driving force.

For Australian viewers deciding whether to invest in another eight hours of courtroom tension, the return of Sam Neill and a well-crafted mystery makes The Twelve: Cape Rock Killer a solid bet. The cast delivers across the board, but the lack of clarity around a few supporting roles means fans will need to wait for the credits to get the full picture. Sam Neill’s performance as Brett Colby anchors the season, making the choice for Foxtel subscribers clear: watch it live, or catch up on demand before spoilers hit.

Frequently asked questions