Norris claims that James Kelly is not only Jack the Ripper's true identity, but that he is also responsible for a number of 'Ripper-like' murders in the United States.

In spite of appeals from lawyers and petitions for clemency, Kelly was sentenced to death by hanging, with the execution set for 20 August 1883.

The statements of his former boss, Mr. Hiron, provided details about the abnormal attitude of his former employee, contributing to commutation of the death sentence.

For the next decades, Kelly remained at large, until 12 February 1927, when he unexpectedly turned himself in at Broadmoor, the same asylum he escaped from 39 years earlier.

During the last two years of his life, Kelly wrote memoirs that police investigator Ed Norris accessed while making a Discovery Channel documentary.

In addition, in his own personal diary he acknowledges that he had hidden in London between the months of August and November 1888, that is from the beginning until the end of the murders.

The indications that in this case attract suspicion lie in the fact that, while being on American soil, there were a number of murders on prostitutes with the same characteristics as those in London.

In turn, in a letter addressed to a newspaper, the anonymous sender declared himself to be Jack the Ripper and threatened to commit a new crime.