A remote island off the North Devon coast, Liars Island is home to few inhabitants. The rugged coastline has a history of smuggling and shipwreck, but there has never been a murder – until now.

When the body of Kieran Deveney is found on Liars Island, it sends shockwaves through the tiny, close-knit population. The rugged coastline has a history of smuggling and shipwreck, but there has never been a murder – until now. With the hunt for the killer underway, two locals confess to the crime.

Each claims they acted alone, and neither can be convicted while the other stands by their story. Which of them is telling the truth? CSI Ally Dymond arrives to uncover the evidence that could crack the case. What she finds is a community awash with secrets.

As a storm closes in, and with the identity of the murderer still in doubt, no one can leave the island. But it’s not the treacherous weather that Ally fears, it’s the people she’s trapped with…