Beth seeks proof of Tom's infidelity from his friend Adam, while police connect him to another murder. Tom admits to his affairs but denies killing Katy. Beth connects Katy to a local drug dealer, leading to a tragic confrontation with the police.

During a school event, the Fairchild's past scandalous sex life becomes public, while DI Edgeworth goes rogue to gather evidence against Tom. Beth makes a shocking discovery and plans her escape.

A year later, Beth marries Adam amidst police presence and high tension. A secret encounter with Tom prompts Beth to discover the truth behind the murders and take drastic measures in order to protect her family.