Broadchurch creator Chris Chibnall has revealed he has already penned the beginning and the end episodes of the second series of the show.

The screenwriter admitted that the first and last scenes of the nail-biting ITV crime drama are already written, as the programme won the Freesat Award for Best of British TV series.

“I’ve written the first scene and the last scene. So I know how it starts and how it ends. Now I just need to fill in the eight hours in between,” he told the Daily Mirror.

The plot remains so top secret that even the cast don’t know who will be returning.

Joe Sims, who plays plumber Nige Carter, said: “We’re all just hoping we’re in it and keeping our fingers crossed. But we haven’t been told.”

The first series of Broadchurch, which starred David Tennant and Olivia Colman (pictured) as detectives searching for a young boy’s killer, was a huge hit upon its premiere in March.

The identity of the murderer was kept under wraps during filming, with only four cast members aware of the secret.