The gangster responsible for the bodies in the Notting Hill house becomes active again, and the unearthing of past events provokes more murders and an international turf war.

The discovery of a mummified body opens an investigation into a supposedly fictional film from the 1960s.

As two people who have been hurt by the care-home murderer take justice into their own hands, the team faces even greater pressure.

Dr Laurie Poole barges into Boyd's office, claiming to have new information on the abuse and disappearance of two boys. Boyd reluctantly takes on the investigation.

Drug-running and witness protection muddy the waters of the murder investigation.

The truth behind Timothy Lovell's murder lies with his missing family.

The case against Carl Mackenzie unravels further when the team discovers a potential link between the massacre and a similar killing spree at an African mine.

Carl Mackenzie was jailed for a high-street shooting spree but he has always maintained his innocence. Now his sister is fighting for an appeal.