The annual Sports Day at respected public school Sudeley Hall ends in tragedy when the headmaster's obnoxious nephew is found strangled in a haystack. The boy was despised by staff and students alike but English master Michael Evans, who was seen sharing a kiss with the headmaster's beautiful young wife earlier that day, soon becomes a prime suspect for the murder. Luckily, his friend Nigel Strangeways, nephew to the Assistant Commissioner of Scotland Yard, is on hand to help investigate the case.

A Question of Proof is the first Nigel Strangeways mystery and is the perfect introduction to this charming and erudite detective from the Golden Age of crime writing.