Set in Bath, two feature-length films pair the wildly ambitious DCI McDonald with the shy, modest DS Dodds. While McDonald has transferred from the mean streets of South London to leap up the career ladder, Dodds has happily languished on the shelf for most of his working life. McDonald is a tough, driven, battering ram of a cop who cracks cases through sheer force of will; Dodds - the tortoise to her hare - is quiet, unassuming and enigmatic. But thrust back into frontline action for the first time in a decade, he discovers a hidden talent for deciphering puzzles.
Two contemporary Britons, seemingly with nothing in common, thrown together, boss McDonald and loyal sidekick Dodds forge a rumbustious, entertaining and ultimately - give or take a few setbacks - effective partnership.