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The acid bath murderer, John George Haigh, lived at the Onslow Court Hotel in Brompton Road, SW3 and worked at 79 Gloucester Road SW7.
In 1944 he shot a young acquaintance called Donald McSwann. Ten months later he also killed both of McSwann's parents who were enquiring about their son. The bodies were dissolved in baths of acid at Gloucester Road.
The motive seems to have been robbery: Haigh had certainly sold his victims' belongings.
Later, he murdered a wealthy widow, 69 year-old Olive Durand-Deacon . Interestingly he went to the police to report her disappearance. But when the police investigated it they found the trail led directly to Haigh.
He confessed to six murders and claimed to have drunk the blood of some of his victims, leading the press to dub him the "vampire of Kensington".
If Haigh's lurid confessions were all part of an insanity strategy to avoid the rope, they failed. He was hanged in 1949.