In Deep

Garth goes undercover as a security consultant to track down Eva Richardson, the mind behind a powerful vice ring. He uncovers a link with the drug squad and, after one of Eva's girls is discovered dead in suspicious circumstances, an internal investigation is launched with results in Liam being posted back to investigate his old drug squad colleagues. In an attempt to infiltrate the web of corruption, Garth sets up a drugs deal. But when this goes disastrously wrong, it becomes clear that someone of high rank is playing for the opposition.

The second part of a drama in which Liam and Garth investigate fellow officers suspected of collusion with a powerful vice ring. Liam's allegiances are put to the test when it becomes apparent that his old friend, senior officer Craig Griffin, is also in on the deal. Garth must race against time to find a key witness held captive by two corrupt policemen.

Liam and Garth try to crack a paedophile ring which is operating through a sophisticated website. Liam befriends the wife of the webmaster and Garth goes undercover in prison to make contact with two of the principal players. After winning their confidence, he discovers that a grisly crime is about to be committed.

Liam and Garth pose as drug dealers in a bid to capture Jamie Lamb, the country's biggest cocaine importer. They infiltrate his trusted entourage and fit in so well that when Lambs wife leaves him taking his two daughters with her, he asks Liam and Garth to kill her and bring back proof in exchange for a shipment of cocaine.

The second part of the story in which Liam and Garth infiltrate drug baron Jamie Lamb's gang. Kelly persuades Tania Lamb to help them fake her murder. Only when the ""proof"" is taken back to Jamie, he turns nasty and ups the stakes, declaring that the deal is not complete until his daughters have been returned to him. Liam and Garth have are forced to use Lamb's daughters as insurance to make sure the exchange of drugs takes place. In a fit of guilt, Tania calls Jamie and unwittingly exposes Garth and Liam's set-up leaving them cornered with no back up.

Police Chief DI Holland challenges gangster Charlie Pearce in order to regain control of a tough area of the city, but is shot dead on his way back from a public meeting with the area's residents. Pearce is, of course, the chief suspect. Liam, Garth and Kelly set themselves up as an operation selling expensive fake watches and it's not long before Pearce and his heavies call round for their first 'insurance' payment. Liam is embraced into Charlie Pearce's fold when, through a stroke of good fortune, he saves Pearce's life. Unfortunately Garth's unresolved issues with his brother Chris land him in deep trouble when Chris tracks him down and blows his cover. Liam's nerve is tested to the limit as he faces the choice of killing his partner Garth to prove his allegiance to Pearce, or coming clean and risking being killed himself.

Liam and Garth go undercover to gain the trust of an arrogant armed robber. But as they are sucked into his brutal world, it becomes unclear who is manipulating whom.

Liam and Garth struggling to keep their cool on an undercover operation against armed robber Sean Denning as the court hearing approaches.

A group of soldiers, trained to go undercover in Northern Ireland, feel they have been treated unfairly by the MOD and threaten to start their own bombing campaign.