Sian's manipulations become increasingly divisive. As Jessica desperately tries to reconnect with her daughter, Nick is horrified to find himself implicated in a violent incident.
Sian's behavior is successfully destabilizing the family as the intense drama continues. A pawn shop receipt stirs up trouble, and Alice's life is suddenly put in danger.
A family who have moved from the city to the countryside take in a mysterious lodger, Sian.