Another likely suspect behind London's Jack The Ripper murders was the 54-year-old German merchant sailor Carl Feigenbaum. Feigenbaum was known to be a psychopath who confessed to mutilating women, and even his own lawyer believed that his client was Jack The Ripper as well! He was also, so the lawyer claimed, able to converse knowledgably on such topics as surgery and dissection. Feigenbaum would lapse into silence, however, if he was asked directly whether he had any practical understanding of these subjects.
Feigenbaum went by many aliases during his lifetime, and was known to be working as a merchant on ships that had been docked near Whitechapel. Records prove that Feigenbaum was working in Whitechapel on every single date of the five Jack The Ripper murders in London's East End, and he and his co-workers were often seen at the nearby brothels as well. According to this theory, before each murder the Ripper came into London on board a merchant ship and then sailed off again while Scotland Yard was left groping in the darkened Whitechapel streets searching for a killer who was many miles away.
After Feigenbaum emigrated to America sometime around 1890, he was convicted of murdering a woman by the name of Julianna Hoffman, and was sent to the electric chair for the crime.
Trevor Marriott concludes his case with these words: “I firmly believe that Carl Feigenbaum was Jack the Ripper and that his name will now enter history as that of the world’s most notorious serial killer".