Meet Inspector Jack Spratt, family man and head of Reading's Nursery Crime division. He's investigating the murder of ovoid D-class nursery celebrity Humpty Dumpty, ex-convict and lover of women, found shattered to death beneath a wall in a shabby area of town. Yes, the big egg is down, and all those brittle pieces sitting in the morgue point to foul play.

Spratt and his new partner, Sergeant Mary Mary, search through Humpty's sordid past in hopes of finding the key to his death. Before long, Jack and Mary find themselves immersed in a bizarre case that reaches into the highest echelons of Reading society and business.