Most of the letters and poems sent in to the police or to Mr Lusk were journalistic inventions. This may even be true of the famous 'From Hell' letter, which is perhaps the most probable one. As nobody knows who he was, its very difficult to be sure of the provenance. Also it was eventually agreed that Jolly Jack only claimed five victims. The figure of eight dates the letter to a period (ending about 1915 or so) when some other victims, including Emma Smith and Martha Tabram, were added to the tally. The MO for these deaths was, however, very different.