There are corners of Victorian London that seem almost designed to conceal dreadful things. Narrow passages where daylight hesitates, respectable shopfronts masking private miseries, and where violence, when it erupted, did so with shocking intimacy. Artillery Passage was one such place. In the spring of 1868, eighteen-year-old Alexander Arthur Mackay worked as a waiter and general servant for George Grossmith (no, not that one…), proprietor of a modest chop house at No. 11. By all appearances it was an ordinary establishment, the sort of place swallowed by the daily bustle of the City. Yet behind its kitchen door unfolded a tragedy that would carry Mackay to an unwanted distinction: he would become the first man executed within the walls of Newgate Prison after public hangings were abolished. The catastrophe began on the morning of Friday the 8th May. With George Grossmith absent, Mackay quarrelled with his employer’s wife, Emma, a woman of forty-five. Whatever sparked the disagreement soon gave way to uncontrollable brutality. The kitchen ceased to resemble any place where food ought to be prepared, becoming instead the sort of establishment that would have had an Environmental Health Officer reaching for the paperwork, before realising this particular inspection required rather more policemen than clipboards. Emma clung on for nine days. Remarkably, she recovered consciousness long enough to identify her attacker and give a statement to the police before finally succumbing to the appalling injuries inflicted upon her. Mackay, meanwhile, vanished. For several weeks, he succeeded in slipping through the widening net, adopting the name George Jackson and travelling to Maidstone, where fate intervened in the most Victorian of fashions. Henry Ratcliff, a prison warder blessed with an exceptional memory for faces, recognised the resemblance between the man calling himself Jackson and an illustration of the fugitive Mackay. On the 28th of June, he was questioned, identified, and escorted back to London, where Newgate Prison awaited him.