The series was announced for UKTV in February 2024, with Chris Lang writing the script and Federation Stories producing.

In March 2024, Trevor Eve, Daniel Rigby, Ruby Serkis, Harry Lloyd, Liz Kingsman and James Fleet joined the cast, led by John Simm and Nikki Amuka-Bird.

Filming for the show began in March 2024, and first-look images from the set were released to the press in August 2024.

A title card at the end of the final episode states 'to be continued,' and it was confirmed in March 2026 that a second series had been acquired by the BBC, with filming starting in February 2026.

Nikki Amuka-Bird, John Simm, Daniel Rigby, Ruby Ashbourne Serkis and Harry Lloyd are set to return for series 2, joined by new cast members Tom Austen and Zora Bishop.

Critics compared the show to a British version of Succession and to Agatha Christie's plots, noting a mix of wealthy family inheritance drama, red herrings and modern touches like mobile phones and neck tattoos.

Some reviewers, including James Hibbs of Radio Times and Michael Hogan of The Daily Telegraph, had differing opinions on the show's device of using flash-forward interviews set two years into the future to bookend episodes, with one praising it for adding momentum and the other criticizing it as feeling artificial and cheap.

The series first aired in the UK on U&Alibi from 23 April 2025, but did not debut on BBC One and iPlayer until 12 July 2026, over a year later.