Jack the Ripper is thought to have killed at least five young women in Whitechapel, East London, between September and November 1888, but was never caught.
Numerous individuals have been accused of being the serial killer.
At the time, police suspected the Ripper must have been a butcher, due to the way his victims were killed and the fact they were discovered near to the dockyards, where meat was brought into the city.
There are several alleged links between the killer and royals. First is Sir William Gull, the royal physician. Many have accused him of helping get rid of the prostitutes’ bodies, while others claim he was the Ripper himself.
A book has named Queen Victoria’s surgeon Sir John Williams as the infamous killer. He had a surgery in Whitechapel at the time.
Another theory links the murders with Queen Victoria’s grandson, Prince Albert Victor, the Duke of Clarence.
At one point, cotton merchant James Maybrick was the number one suspect, following the publication of some of his diary which appeared to suggest he was the killer.
Some believe the diary to be a forgery, although no one has been able to suggest who forged it.
Other suspects include Montague John Druitt, a Dorset-born barrister. He killed himself in the Thames seven weeks after the last murder.
George Chapman, otherwise known as Severyn Kłosowski, is also a suspect after he poisoned three of his wives and was hanged in 1903.
Another suspected by police was Aaron Kosminski. He was admitted to Colney Hatch Lunatic Asylum and died there.
Dr Thomas Neill Cream poisoned four London prostitutes with strychnine and was hanged in 1892.
Some of the more bizarre links include Lewis Carroll, author of the Alice in Wonderland books, who taught at Christ Church until 1881 – which was at the forefront of the Ripper murder scenery.
Winston Churchill’s father – Lord Randolph Churchill – has also been named as a potential suspect.
Crime writer Patricia Cornwell believes she has ‘cracked’ the case by unearthing evidence that confirms Walter Sickert, an influential artist, as the prime suspect. Her theories have not been generally accepted.
Author William J Perring raised the possibility that Jack the Ripper might actually be ‘Julia’ – a Salvation Army soldier.
In The Seduction Of Mary Kelly, his novel about the life and times of the final victim, he suggests Jack the Ripper was in fact a woman.