Series 5 - Murphy's Law

Murphy is working as a cover officer for an old friend, Mitch, and his fellow undercover officer, Kim. However, there are tensions between the two undercover officers and when they go missing Murphy is determined to find them.

With Mitch dead and Kim still missing, it's time for a heavily guilty Murphy to go undercover in the hope of finding Kim before it's too late. What awaits him is a world of people trafficking, drug smuggling and unwilling prostitution.

Now that Baker knows Murphy is a cop, he must race against the clock to find Kim before her secret is revealed too. However, local Chief Superintendent Bowry cares less about Kim's life and more about his own reputation and funding, and Murphy is forced to take desperate measures in his hunt for his missing friend.