A high-profile investigation by Swanson and Moore into Sadler's past history and his whereabouts at the time of the previous Whitechapel murders indicates that the police may have suspected him to be the Ripper.
En højt profilerede undersøgelse af Swanson og Moore i Sadler fortid og hans opholdssteder på tidspunkterne for de tidligere Whitechapelmorder indikerer, at politiet kan have mistanke om at ham kan være the Ripper.