John Reginald "Jack" Spratt, Detective Inspector, Nursery Crime Division, Oxford and Berkshire Constabulary, Officer Number 8216. Jack Spratt is the protagonist in a series of alternate history science fiction fantasy novels by Jasper Fforde. He was named after the character from the English nursery rhyme. As revealed in The Big Over Easy, for example, he hates eating fat, and was once married to a woman who ate nothing else (hence, she died).