The only clue that they got was the ABC railway guide. They thought someone left it on purpose. The crime attracted very little attention for more thrilling news, and everyone were starting to forget it. However, the second letter came to Poirot suddenly.
The letter said “Dear Mr. poirot, well, what about it? First game to me, I think. The Andover business went with a swing, didn’t it? But the fun’s only just beginning. Let me draw your attention to Bexhill-on-Sea. Date, the 25th inst. What a merry time we are having! Yours etc. ABC”
Poirot thought it was possible that the surname of the intended victim would begin with the letter B. The first victim was a Mrs. Ascher who lived in Andover, so the victim and the place might be selected by an alphabetical system. What they could do was making special note of the B’s and having a watch kept on anyone connected with the Ascher business, Partridge and Riddell, and of course Mr. Ascher himself.