Haigh's next and last victim was Olive Durand-Deacon, 69, the wealthy widow of solicitor John Durand-Deacon and a fellow resident at the Onslow Court Hotel. Haigh by then was calling himself an engineer, and Olive mentioned an idea to him that she had for artificial fingernails. He invited her down to the Leopold Road workshop on 18 February 1949 and, once inside, he shot her in the back of the neck with the .38 caliber Webley revolver that he had stolen from Archibald Henderson, stripped her of her valuables, including a Persian lamb coat, and put her into the acid bath. Two days later, Durand-Deacon’s friend Constance Lane reported her missing.