To Fear a Painted Devil - 1965)

Like any small community, Linchester has its intrigues: love affairs, money problems, unhappy marriages. But the gossip is elevated to new heights when young Patrich Selby dies on the very night of his beautiful wife's birthday party.
The whole neighborhood was there, witness to the horrible atack of wasp stings Patrick suffered at the end of the evening. But did Patrick die of a wasp sting? Dr. Greenleaf thinks not. Heart failure, more likely .
Still, Greenleaf isn't at peace about his death. After all, everyone in Linchester hated Patrick. With the help of a certain naturalist, Dr. Greenleaf begins to think about murder.

Vanity Dies Hard - 1965

Alice Whittaker was 37, rich but dowdy, with no career. Her life a lonely failure, she had got by with the one thing she did have - money. Then handsome Andrew Fielding came into her life, and just as suddenly her beautiful friend, Nesta, vanished from it - leaving a trail of confusing clues.