Heads You Lose - Christianna Brand

Pigeonsford Estate is playing host to a group of close friends when one of their number, Grace Morland, is found dead in a ditch. The murder is made even more unusual by the fact that Grace was wearing her friend Francesca's hat, the same hat that only the day before she'd claimed she wouldn't be caught dead wearing.

Inspector Cockrill has known most of the friends since they were children. They are all from good families and very close to one another; how, then, could one of them be a cold-blooded killer? And if one of them had murdered Grace which one was it and why had they done it?

First published in 1941 Heads You Lose is a classic country house mystery that proves that in every friendship there are secrets, some of which are best left buried.