The A.B.C. Murders — Agatha Christie

"Mr. Hercule Poirot -- you fancy yourself, don't you, at solving mysteries that are too difficult for our poor thick-headed British police? Let us see, Mr. Clever Poirot, just how clever you can be." Was the anonymous note a brilliant challenge or a crackpot hoax? The answer is as loud and clear as a woman's scream--precisely that of Alice Ascher, a shopkeeper in Andover bludgeoned to death on the job. Next to her corpse, a clue that's as simple as ABC. Alphabetically speaking, the master Belgian sleuth suspects it's now a matter of one down, twenty-five to go...