BURDEN OF PROOF
However, impatient he is becoming with the official police investigation, Craven is soon drawing into the murkier issues surrounding Emma's death having been requested by Pendleton and Harcourt to attend a parliamentary enquiry into the purchase of IIF by Fusion Corporation, only to find that it is hoped he will testify on behalf of the intelligence services and the government to prevent the buyout taking place.
Pendleton informs Craven of their belief that Bennett and IIF had Emma killed, strengthening his belief that the killer, now identified as McCroon (Sean Caffrey), an informer known from Craven's time in Northern Ireland, was not acting alone but was in the employment of an organisation more closely connected to the nuclear industry than paramilitaries in Ulster.
After leaving Parliament, Jedburgh and Pendleton find that Terry Shields has been murdered and Craven is introduced to Clemmy (Zoe Wanamaker) who describes the history both of Jedburgh and the GAIA Organisation. Craven returns home and requests that the police watch on his house is removed, only for McCroon to return, exactly as Craven had hoped for.

BREAKTHROUGH
After breaking into Craven's house, McCroon is shot dead seemingly just as he was about to tell Craven who he was working for. Subsequently, Craven has a breakdown and is checked into hospital. Elsewhere, Pendleton and Harcourt investigate an irradiated body that has been dragged out of the lake beside Northmoor, an investigation that furthers their enquiries into IIF's activities.
With Jedburgh returned to London following a number of CIA missions in South America, Craven convinces him to break into Northmoor, following the same path the GAIA Organisation took to enter the facility. Using a new contact supplied by Jedburgh, Craven alone breaks into a new military intelligence facility, brought online but unoccupied, to source a map of Northmoor. Craven escapes from the police just as they become aware of his presence within the building and mount a raid, escaping into the Barbican to meet Clemmy.
Before Craven leaves for Northmoor, however, he is again asked to attend the parliamentary enquiry where he meets Godbolt once again, whose full participation in the GAIA Organisation's and IIF's activities at Northmoor become clear.


NORTHMOOR
With Godbolt's assistance and following the same path the GAIA Organisation took into the facility, Craven and Jedburgh enter Northmoor but are entirely unaware that Bennett and Grogan have already arranged for an armed security team to be made available.
After Godbolt leaves, Craven and Jedburgh make their way to a hot cell where they discover a store of plutonium, the presence of which IIF had always denied. Jedburgh takes a quantity of plutonium and leaves Craven to make his own way out. Due to radiation poisoning, however, within the hot cell, Craven collapses within Northmoor after contacting Pendleton.
At the parliamentary enquiry, Bennett states that plutonium was indeed present at Northmoor, stored on behalf of the Ministry Of Defence, against all international agreements, making clear that the conspiracy at Northmoor has been entirely government-sponsored from the very beginning, a fact that Craven and Jedburgh are, as yet, unaware of.