Murphy's Law

Working as a covert arms dealer, Murphy is about to make an arrest when he realizes the man he's dealing with is Caz Miller, an associate of the seemingly untouchable crime boss Dave Callard. Murphy abandons his original plan and sets his sights on Callard.

Callard refers Murphy to the violent, bad-tempered McGeechan brothers. They need his help reactivating some illegal assault rifles, but they won't say why. As Murphy tries to learn their plan, he makes a discovery about the man Callard has asked him to kill.

Callard wants counterfeit cash. Murphy calls in fellow undercover officer Jill Calder, who has infiltrated a dangerous ring of counterfeiters. If all goes well, Murphy will have more evidence against Callard, and Jill will get the man who's making the phony euros.

Exhausted and bitter, Murphy is ordered to investigate George Garvey, a wealthy, respected hotelier with suspected criminal connections to Callard. His boss, DS Rees, wants the collar and the career boost, but Murphy finds himself increasingly drawn to a woman from the underworld.

Murphy is ordered to testify in a murder case in which he must defend his integrity under cross-examination. At the same time, he helps Callard with an incoming heroin shipment—and sets up a police sting to take the drug lord down.

Murphy is in hiding with Caz Miller and Callard, who starts destroying evidence. Murphy and Miller worry he may destroy them as well, forcing Murphy to make his move.