twelve o'clock
`` About a week after my arrival in England a horrible tragedy was enacted in the Seven Dials district . A woman was the victim , and a devil in human form the perpetrator of the crime . The poor creature was literally hacked to pieces in a manner suggesting the hand of Jack the Ripper , but in this instance the murderer , unlike Jack , was caught red-handed , and turned out to be no less a person than Carleton Barker . He was tried and convicted , and sentenced to be hanged at twelve o'clock to-day . `` When I heard of Barker 's trouble I went , as a matter of curiosity solely , to the trial , and discovered in the dock the man you and I had encountered at Keswick . That is to say , he resembled our friend in every possible respect . If he were not Barker he was the most perfect imitation of Barker conceivable .