Police at the Funeral by Margery Allingham
Campion is contacted by Joyce Blount, who is engaged to a friend of his. Joyce lives in Socrates Close, Cambridge, surrounded by the old, eccentric Faraday family. The matriarch of the family is Caroline Faraday, widow of a famous academic. However, Uncle Andrew has gone missing and all is not well within the household. As a favor to his friend, Marcus, Campion goes to the house and helps with the investigation. Upper-class families are always at least a bit more open to others like themselves than to detectives.
It turns out Uncle Andrew is dead, just the first of the murders. The family members don't get along well, but they all rely on Mrs. Faraday, since none have money of their own. To be honest, I really enjoyed them. One Aunt was a bit of a religious fanatic, an uncle is a closet drinker who wants to be braver than he is, Joyce is just sweet, Carolin is as tough as...