After failing to intervene in a violent incident, a man moves his family to an idyll where their neighbours harbour a secret.

Tensions rise in Coldwater as John and Fiona attend the solemn funeral of a beloved local resident, and Tommy and Rebecca are thrown into a panic.

John - who is full of regret over his friendship with Tommy attempts to voice his suspicions to Fiona, but she feels she needs space from John.

John and Fiona try to work out a plan, but differ in their opinions. Tommy finds himself in a troubling situation after a tour group stumble upon something sinister.

After the discovery of the box, John and Fiona go to dangerous lengths to ensnare Tommy.