Laura travels to Edinburgh to uncover the truth behind Andrew's wife's death, but finds more than she bargained for.

Terrified of arrest, Andrew enlists Luke's help as an alibi, but Laura won't give up easily; violent consequences are imminent.

After the discovery of Andrew Earlham's body, police seek to determine who killed him, and Laura once again finds herself drawn into Andrew's destructive path.

Feeling the full force of DI Renton's investigation, Laura looks to those closest to her for support. But when suspicions fall on Ian, Laura is left questioning who she can trust.

In a last-ditch bid for her freedom, Laura takes drastic measures to hold Oliver to account, and the truth of what happened on the morning Andrew died is finally revealed.