Modelled on Oliver Goldsmith's classic novel The Vicar of Wakefield, Murphy builds a comedy peopled with thieves, pimps, bawds, lechers and imposters who will prey on innocence unless God - or the ruling class - takes a hand. It centres around the downfall of Dr Primrose, who relates the misadventures that have caused his downfall and brought disintegration and ruin on his loved ones.