A gruesome discovery sets DI Baxter, DS Rose and DC Edmunds on the trail of the Ragdoll killer, who also lists six more people due to die; it's a race against time to find the victims and track down a killer before he strikes again.

With the Ragdoll killer proving unstoppable, the team hunts down the second victim on the list; when hazy memories from the past surface, Rose starts his own investigation into the case and his dubious interview tactics cause concern for Edmunds.

Rose's erratic behavior raises questions for Edmunds but Baxter won't listen. With the killer one step ahead, her plans to protect the third victim go awry with devastating consequences and frustratingly they are forced to watch the Ragdoll killer's horrific plans play out.

In order to protect the next person on the kill list, Rose and Baxter attempt to outwit the Ragdoll Killer with an unorthodox plan. Edmund's past catches up with her as she investigates Rose and his unusual behavior. The team finally get their first tangible lead on the Ragdoll killer.

Rose and the Ragdoll killer engage in a sadistic game of cat and mouse in which Rose is pushed to the edge. Baxter goes back to basics to try and track down the killer while Edmunds’ piqued suspicions put her on the right track but also land her in grave danger.

Rose is forced to confront his choices as Baxter tries to help him choose a path of redemption; Baxter and Edmunds are faced with a difficult decision as Rose's name becomes that last one left on the kill list; Edmund's dark past is revealed.