A serial killer strikes in alphabetical order: Alice Ascher in Andover, Betty Barnard in Bexhill, and Sir Carmichael Clarke in Churston. Each victim is found with an ABC Railway Guide beside them. Poirot and the police hunt for the man who calls himself "A.B.C."—but the pattern may be a disguise for a single, calculated murder.
Your mission: Use SQL to meet everyone connected to the case, see where each murder happened, find who was wrongly accused, who stood to gain from the third victim's death, and reveal who committed the A.B.C. murders.
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