Because he was never caught it's hard to tell how he prepared. Jack The Ripper has characteristics of organized and unorganized killers. He brought his own weapon (organized) but his victims seemed to have been chosen at random or with little planning (unorganized). This is common among serial criminals. They can be both organized and unorganized. For law enforcement the orgainzed is the hardest to catch. They plan every detail and leave little evidence.
The Jack the ripper murders as we know, were in 1888. At 5 were attributed to him that year.
Most of the Ripper's murders were found in one small geographical area, about 1 square mile, in London's poverty-stricken east end. But there were other murders outside that area around the time of Jack The Ripper's killings that have not been ruled in or out as Ripper murders.
The unsolved 'Jack the Ripper' murders.
The files kept by the Metropolitan Police show that the investigation opened in 1888 encompassed eleven murders from 3rd April 1888 to 13th February 1891 and were known as the Whitechapel Murders. Amongst this eleven murders investigated by the police, five are almost universally agreed upon as having been the work of the Ripper. However there were other murders and there is no absolute proof that the Ripper killed only the 5 or even this 5. Numerous authors proffer numerous possibilities of identity for the Ripper and the actual number of murders. So the whole Ripper scenario is just shrouded in mystery - everyone can have their pet theory that cannot be proven or disproven. In fact apart from the fact that there were murders, nothing is known for sure - perhaps 'Jack the Ripper' was a woman?
The six murders generally attributed to Jack the Ripper occurred between 7 August and 9 November 1888.
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A series of murders in Whitechapel London during the 1880's
Thomas Bates was a witness that saw the ripper while he was walking from the place of one of his murders.
The last of the canonical five murders was Mary Kelly on November 9th, 1888. But some people believe that later murders in Whitechaple were also the work of Jack the Ripper. And others believe that Jack the Ripper left the country and committed murders in the US. We don't know for sure. Soon after Kelly's death, the body of Montagu Druitt was found in the Thames, and a note went round Scotland Yard saying that there would be no more murders now. Assuming Kelly was the last Ripper victim, this would point to Druitt as the serial murderer. As for some other murders in the area in the following year or two, many authors have tried to link these to the Ripper, but most experts are not convinced.
Jack the Ripper was never caught and identified so there is no way to know the identity of his comrades. From the crime scenes and nature of the murders it is very unlikely that the Ripper had any help. The majority of serial killers work alone, the Ripper was almost certainly alone in his crimes.
The Whitechapel Murders began with the death of Mary Ann Nichols killed on 31 April 1888.
The only connection is the word Ripper. Jack The Ripper is the name for a 19th century serial killer that killed prostitutes in London's impoverished east end known as Whitechapel. The Yorkshire Ripper is Peter Suttcliff who was convicted of 13 murders in 1981. The New York Ripper is a fictonal character.