Jack the Ripper Jack the Ripper is the popular name of the unknown killer who terrorized London between August and November of 1888. (He was also called the Whitechapel Murderer, after the city district where he operated.) The exact details of the case are uncertain: five women are generally considered to be definite victims of the Ripper, though there may have been more or less. All were strangled and then had their throats cut, and many were further mutilated. The nickname Jack the Ripper came from the signature on a letter, possibly authentic, sent to a news agency during the rampage. The killings stopped as abruptly as they began, and London police were unable to solve the case or find a firm suspect. The case was closed officially in 1892, but the mysterious anonymity of the killer has kept the case in the public eye ever since.