Hercule Poirot returns home after an agreeable luncheon to find an angry woman waiting to berate him outside his front door. Her name is Sylvia Rule, and she demands to know why Poirot has accused her of the murder of Barnabas Pandy, a man she has neither heard of nor ever met. She is furious to be so accused, and deeply shocked. Poirot is equally shocked, because he too has never heard of any Barnabas Pandy, and he certainly did not send the letter...

A stand-up comedian wonders who she can trust when she anonymously receives the same token clue, a small white book, that has been found at each scene of a serial murder case.

In this first and only comprehensive examination of the universal, but widely misunderstood, practice of grudge-holding will show you how to use grudges to be your happiest, most optimistic, and most forgiving self. Secretly, we all hold grudges, but most of us probably think we shouldn't, and many of us deny that we do. To bear a grudge is too negative, right? Shouldn't we just forgive and move on? Wrong, says prolific crime novelist and self-appointed...