The award-winning detective comedy sees DI Jack Cloth (John Hannah) and DC Anne Oldman (Suranne Jones) reunited as Cloth goes undercover.

The City of Town is being menaced by a vicious gang of armed robbers. After one brutal robbery in which Todd Carty (Todd Carty) is savagely murdered, Cloth assumes the identity of a hardened criminal to gain access to the gang and its twisted leader MacRatty (Stephen Dillane). Meanwhile Oldman is being wooed by Hope Goodgirl (Anna Chancellor), a charismatic and openly bisexual politician hoping to be elected Mayor of Town.

In a thrill-packed finale, will Cloth and Oldman defy Goodgirl's homicidal tendencies by defusing the bomb and bringing the evil-doers to book? Or will Cloth end up falling abruptly and bizarrely in love with his wife's murderer, Tom Boss (Julian Rhind-Tutt) and walking off with him, hand-in-hand, into the sunset? Or both?