While Hercule Poirot alerts Scotland Yard about receiving mysterious letters from A.B.C., Cust intends to start his business, as a travelling salesman. After receiving a forewarning letter from A.B.C., Alice Asher in Andover is found dead with an A.B.C. Railway Guide beside her. Soon after, the threat of the second murder arrives before Betty Barnard in Bexhill, is found dead in a similar fashion. Unknown to Hercule, a few hours before her death, Betty had sampled a pair of Cust’s stockings.
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