If Jack had possibly worked in a slaughterhouse, a possible job he could have done is that of offal dresser. I came across this in a biography of Lulu the singer, who talks about her Dad, who worked in a Glasgow slaughterhouse as an offal dresser. Offal dressers used sharp narrow knifes and could remove the offal, kidneys, liver etc in under a minute. Her Dad was proud of the speed with which an animal carcass could be stripped. This is a very specific skill and would explain why Jack could operate quickly and in the dark. Any thoughts?
Miss Marple
Miss Marple
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