Otrovno pero

Lymstock is a town with unsavory secrets aplenty - a town where even a sudden flood of anonymous letters hasn't managed to disturb the spirits much. But that will all change when one of the recipients of the anonymous letter, Mrs. Symmington, commits suicide.

And in her farewell letter, she wrote: "However, I can't." Miss Marple doubts the coroner's claim that it was a suicide. Soon no one trusts anyone anymore - and secrets stop being just embarrassing and become deadly.