Ali receives devastating news and Robert has some difficult questions for her. Ali then takes an impulsive decision and Katy questions Robert's methods.
The police have a possible connection between Sam Blackwell and known criminal Michael Collersdale. Robert explores the current theory, determined to get to the truth.
Haunted by the death of a witness under his protection, when former policeman Robert moves to the Lake District, he is given a chance to redeem himself by safeguarding a family under threat.
The investigation into Michael Collersdale takes an unexpected turn. Robert has some worrying news for David and Ali. Sam and Joe are caught up in a terrifying ordeal.
When ex-police officer Tom hears news of the abduction of Julie Delaney, he leaves his partner Sam and their beautiful coastal home and heads straight to the crime scene.