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This is very difficult to answer because you did not specify who 'they' were. I'll take a guess that you mean Scotland Yard. Actually, the Jack The Ripper case is still an open case and since 1888 many people have tried to discover who the killer was. Scotland Yard stayed with the case at least until the early 1890's. I'm sure it was a great disapointment to the Yard for their failure to catch the Ripper.
What else can I help you with?
What was the name of Jack the ripper's sisters?
no one knows who jack the ripper is let alone how many sisters he had
What is the nastiest murder ever?
Jack The Ripper. No, Jack the Ripper is just the most notorious. There are far too many murders and murderers to know who may be the nastiest. And after years of research on the subject (if you can stomach it) you would only arrive at an opinion. Nasty can mean a lot of things and there are way more nastier and way more prolific murderers than Jack.
How many knives did Jack the Ripper have?
at least 2 ..
How many victims were linked to Jack the ripper?
5
How many suspects in the Jack the Ripper case were doctors?
2 were doctors
How many Jack the Ripper walks are there?
I posted the information in the related links box below.
Was Jack the Ripper Walter Sickert?
Everybody seems to have their own favorite suspect as Jack the Ripper. There has never been a shortage of suspects or opinions on the identity of this notorious killer. I have studied the crimes of the Ripper and read many books on this subject including modern investigations using 21st century investigative tools and my opinion is that Walter Sickert was the Ripper. There is DNA evidence that links letters of Sickert's to some of the Ripper letters. This is but one example of the many "coincidences" that ties Sickert to the Ripper crimes.
Why did Jack The Ripper carry out his murders in a very short space of time?
He didn't. Jack The Ripper's crimes continued long after the murder of Mary Jane Kelly on November 9, 1888. Many believe the Ripper was still killing as late as 1891, and possibly after the turn of the 20th century.
Where can I find a review of Discovery Channel's Documentary Jack the Ripper in America?
Find a good, detailed review of Discovery Channel's "Jack the Ripper in America" at The 44 Diaries blog. It gives you a complete summary of the documentary, and includes many links and photos. Including the new composite of what detectives think Jack the Ripper really looked like.
Why was Francis Thompson a suspect of being Jack The Ripper?
Like many other Ripper suspects, Thompson was associated with Jack The Ripper only by the flimiest of circumstances. Thompson had trained as a medical doctor and he lived just south of Whitechapel. Other than that I could find no other reason for him to be a suspect.
What number murder was Mary Jane Kelly of Jack the Ripper?
For many years it was believed the Mary Kelly's murder on November 9, 1888, was Jack The Ripper's last murder. This simply is not true. A prostitute named Francis Coles was murdered in Whitechapel in 1891 who is now also thought to be killed by JTR. It is also most likely that Mary Ann 'Polly' Nichols was not the Ripper's first victim. At the very least Martha Tabram, who was found murdered several weeks before Nichols, was the Ripper's also. If this is true than Kelly would have been the Ripper's sixth victim, not the fifth.
Did Jack the Ripper have a partner in the killing?
It's impossible to know- nobody knows who he was, so it's not possible to say if he had an accomplice. //The crime scenes and the conditions of the bodies themselves denote a single killer in the Ripper crimes. There have been so many theories about conspiracy and multiple killers, yet none of them are consistant with the evidence.//
