The team uncover the shocking circumstances surrounding the murdered soldier, and find themselves in danger.
Leo, Nikki and Jack are called to Afghanistan to identify whether human remains found by a water supply project are those of a British soldier believed murdered by the Taliban five years earlier.
Leo suspects that he is up against an establishment cover-up when his informant is murdered.
Nikki and Jack investigate the death of a man found on a building site. Leo tries to establish the cause of a fatal tumour and discovers that the dead man had a similar condition.
Nikki persuades Leo and Jack that the landlady was the victim of a serial killer.
A pub landlady is stabbed to death and her little finger cut off. Jack and Leo uncover compelling evidence implicating the husband, but Nikki is convinced of his innocence.
Nikki and Jack uncover a threat to national security. Leo is anxious to secure the mother's release before her surviving son can be adopted.
Nikki and Jack investigate a double shooting. Leo attempts to prove the innocence of a mother convicted of smothering her baby on the evidence of his mentor.
The body of the confectioner's long-lost granddaughter is dragged from the Thames. Information provided by the dead man's estranged daughter, who has now inherited the company, sheds new light on the investigation, but it is the discovery of a third body that provides the vital evidence. Leo decides to employ Jack at the Lyell Centre.moreless
The wealthy owner of a struggling confectionery firm is found dead in a hotel room, apparently from a heart attack. Nikki enlists the help of forensic scientist Jack Hodgson in an attempt to prove the man was murdered.