I've done some reading about ol' Jack, and there was I believe a cousin of the royal family, who was a nut case with a genital deformity after a surgery when he was young. He was prone to blackouts where he'd forget days, and who had bizarre fits of rage caused my women. He was sent to America where he pursued his sub par painting, and right after that the murders stopped in England, but he had two documented cases of wigging out in New York. Once at a gallery I believe, a women sat next to him, and he started to scream at the top of his lungs uncontrollably, and once people calmed him down, he didn't remember doing it. That and a few hookers wound up dead in the Bowery, he fell ill, and those dead hookers just stopped turning up as often in the harbor.