One of us is lying . . .

When Londoner Vikki receives an invitation from Niall Blake to join him for a weekend at his family home in a remote part of Ireland, she hopes it will be the perfect opportunity to turn their friendship into something more significant. But Niall has a different reason for his proposition ...
As the weekend takes a sinister turn and Vikki discovers more about Niall, his estranged older brother Alex and his over-compensating sister Lainey, it becomes clear that the family harbours a long-buried secret. But who is out to destroy them? Could it be one of their own? And why did Niall invite Vikki along for the weekend?