7. Hard Stop

When a spate of shootings claims Wes; Ronnie and Joe are left with little time to grieve - they must catch the killer before he or she moves on to the next person on the hit list. The next likely victim seems to be Henry Sharpe, head of the Crown Prosecution Service, but gradually the link between all the targets becomes clear. The connection is Mark Glendon, who has been in prison after being convicted of the murder of his wife four years previously. Although Glendon is still in custody, his case has been reopened for a retrial. The police face an uphill struggle to find any leads implicating Glendon in the shootings. With the new trial already underway, the race is on to catch the killer before the jury deliver their verdict.