Laura's worst fears come to pass and her hidden past is exposed. But she must fight to put her personal struggles aside for the sake of one of her pupils, whose physical distress throws her unexpectedly at the mercy of Andrew.
Laura enlists Tom's help to bring Andrew to justice. However, when a deception in Laura's personal life comes to light, she is left with no one to turn to, and she resorts to dangerous methods to force Andrew's confession.
Laura travels to Edinburgh to uncover the truth behind Andrew's wife's death, but finds more than she bargained for. Tensions between Tom and Katy reach fever pitch as their secret threatens to surface.
Terrified of arrest, Andrew enlists Luke's help as an alibi. But Laura won't give up easily, and the final match between the two is set to have violent consequences.
Three weeks after his disappearance, Andrew's body is found on the Kent marshes. His throat slit, it's declared he was murdered. Laura meanwhile is trying to move on from her ordeal.
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.
A vital piece of evidence comes to light. Laura, blindsided, seeks to discover its origin, and with Katy and Liam's help, she's led to a startling new suspect.