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Medical training
The serial killer is believed to have killed five prostitutes in Whitechapel, east London, in 1888 but he was never caught.
His victims were either strangled or stabbed, with some of the bodies badly mutilated and even having organs removed. Some believed he had medical training.
The pseudonym Jack the Ripper was coined from a letter sent to a London news agency at the time of the murders, supposedly from the killer himself, but which police later dismissed as a hoax.
Countless articles, books, plays, films and musicals are based on the unsolved murder mystery, among them 2001's From Hell, starring Johnny Depp.
Crime novelist Patricia Cornwell's 2002 book Portrait Of A Killer set out to solve the killings using modern investigative techniques.
She concluded that artist Walter Sickert was the real Jack the Ripper but other Ripper experts dismissed the findings.
Suspect fled
Also among the names mooted was Francis Tumblety who, according to a 1995 book, was arrested shortly after the last killing but escaped and fled to America.
Another theory is that more than one person was responsible for the killings.
The Crime Museum, stored at Scotland Yard, contains amongst other items death masks, casts of necks disfigured by rope burns and a collection of nooses hanging from a gallows.
New exhibits have been added for relaunched museum.
http://news.bbc.co.uk/1/hi/5173314.stm
I demand a museum presentation on "Spring Heeled Jack"
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