While Liam goes undercover to investigate a former colleague, Garth discovers some surprising facts from prostitutes about the relationship between the madam and a policeman. Show more

Loyalties are put to the test as Liam is sent undercover in his former crime squad to investigate an old friend, Craig Martin, suspected of being involved in organised crime.

Liam and Garth go undercover to investigate a paedophile ring operating through a website.

Liam and Garth continue their infiltration of an internet paedophile ring.

Liam goes undercover and infiltrates a group of racial terrorists.

An old adversary of Garth's returns to wreak his revenge but mistakenly targets Liam's family.