As premiered on Sky One. Four friends Rick, Baxter, Woody and Quinn are on their way to visit their friend Alvo at his luxury villa in Majorca. Alvo has paid for the whole trip - he wants to celebrate selling his business with his oldest friends. But as the weekend unfolds, a more prickly side to Alvo starts to emerge. And when a masked man appears at the villa, it becomes clear Alvo isn't quite the man they thought he was. What happens next will test their nerve, their loyalty and change their lives forever as what started as a holiday in the sun turns into a labyrinthine nightmare.