It’s been ten days since Spector told Stella that she would never catch him. As Stella tries to help Spector’s surviving victim remember her attacker, he is forced to confront the loose ends he left behind in Belfast.
It has been ten days since Paul Spector told DSI Stella Gibson that she would never catch him. As Gibson tries in vain to help Spector's surviving victim to remember the identity of her attacker, Spector is forced to deal with the loose ends that he left behind in Belfast.
His return to the city reveals that someone from his past has been helping police with their enquiries, forcing Spector to change his plans with terrifying consequences.
Gibson realises that her mistakes have put the life of witness Rose Stagg in danger. Desperate to save Rose's life, she steps up the police investigation as serial killer Paul Spector continues to stalk Belfast's streets.
Gibson orders extensive surveillance on Spector's family, believing they will lead them to Paul, whose whereabouts remain unknown. As the search for Rose Stagg becomes ever more desperate, Spector directs his fury at Gibson after the two narrowly avoid meeting, trespassing into her private world and delighting in taunting and provoking her.
Gibson informs Burns that their confrontation in her hotel room may have been witnessed by Spector, and the detective is shocked to discover the serial killer has been paying visits to one of his surviving victims in hospital. Seizing on the opportunity, she finally locates Spector and puts him under surveillance, but her success is short-lived as she is forced to face her worst fears.
With Spector under surveillance, Gibson wants to make sure that a solid arrest strategy is put in place so that no evidence is lost and the police have the best chance of saving Rose Stagg. However, the killer's unpredictability forces the detective to act quickly as her carefully laid plans fall apart in front of her eyes.
Gibson's investigation leads her to the killer's lair, but there is no sign of Rose Stagg and the detective instructs her team to step up the interviews with Katie, Sally Ann and Spector in a desperate attempt to find her. However, it is only when Spector makes a final move to remain in control that Gibson is offered any answers.