Chloe Angharad Davies

Seven reality show contestants arrive in the Welsh mountains to compete for a life-changing prize, not realising what they're truly signing up for.

Each stranger has a secret - and the show will force them to expose one another live on air.

It's not long before things take an even darker turn, and Detective Ffion Morgan is summoned to untangle the truth behind the scenes.

And when a murderer strikes, every one of Ffion's suspects has an alibi... and a secret worth killing for.

On New Year's Eve, Rhys Lloyd has a house full of guests.

His lakeside holiday homes are a success, and he's generously invited the village to drink champagne with their wealthy new neighbours. This will be the party to end all parties.

But not everyone is there to celebrate. By midnight, Rhys will be floating dead in the freezing waters of the lake.

On New Year's Day, DC Ffion Morgan has a village full of suspects.

The tiny community is her home, so the suspects are her neighbours, friends and family - and Ffion has her own secrets to protect.

With a lie uncovered at every turn, soon the question isn't who wanted Rhys dead… but who finally killed him.

In a village with this many secrets, a murder is just the beginning.