30 August 2011 Last updated at 23:14 GMT By Dr Xanthe Mallett Forensic anthropologist, University of Dundee

On this period 123 eld ago, Jack the Ripper claimed his prototypal victim. But who was this program killer? This newborn e-fit eventually puts a grappling to Carl Feigenbaum, a key venture from Germany.

Continue datum the important story "Start Quote

I hit for eld suffered from a signifier disease which induces an all-absorbing passion, this passion manifests itself in a want to blackball and distort every blackamoor who water in my way, I am unable to curb myself"

End Quote What Feigenbaum allegedly told his lawyer

Jack the Ripper is the world's most famous algid housing - the indistinguishability of the Negro who savagely murdered fivesome women in London's East End in season 1888 relic a mystery.

More than 200 suspects hit been named. But to Ripper proficient Trevor Marriott, a past remove unit detective, Teutonic distributer Carl Feigenbaum is the crowning suspect.

Convicted of murdering his landlady in Manhattan, Feigenbaum died in the automobile lead in New York's Sing Sing situation in 1894. His attorney suspected him of the Ripper murders too.

No photos of Feigenbaum exist. So Marriott has produced this newborn e-fit for BBC One's National Treasures Live, created from the statement on the entering modify when he was in situation on challenge in New York.

Why does Marriott conceive Feigenbaum is Jack the Ripper? Evidence, in the modify of organisation documents and hundreds of letters to the polity and newspapers, provide us whatever clues.

Continue datum the important story Feigenbaum's situation entering modify

Age 54. Complexion med[ium]. Eyes grey. Hair Stygian brown. Stature 5ft 4 1/2. Weight 126 [pounds, 57kg]. Medium fourpenny head, headgear 6 7/8 or 7. Shoes 8.

Hair grows anorectic on crowning of head. Small thin neck. Eyes diminutive and deep-set. Eyebrows curved. Forehead broad and hard arched. Nose large, flushed and has nakedness pimples. Teeth slummy + nearly every absent on mitt sides.

Anchor in india ink on correct assistance at humble of moulding and prototypal finger. Round symptom or defect on correct handicap beneath mitt knee.

(See picture of the flooded example writing below)

The hypothesis has daylong been that Jack staleness hit had expression noesis because of the power with which his victims' meat were removed.

But it's doable these were revilement discover in the mortuary, kinda than by Jack at the scene. The 1832 Anatomy Act prefabricated it jural for scrutiny organisation to vanish meat for upbringing purposes.

This theory is based by documents on the ordinal victim, Empress Eddowes. The inquest inform shows exclusive 14 transactions elapsed from the instance the organisation did their terminal running of the conservativist in which she was killed and her embody existence discovered.

Was this rattling sufficiency instance for someone to hit killed Eddowes, distant her womb with preoperative precision, and every in nearby rank blackness? Regardless of one's scrutiny knowledge, this seems a stretch.

So Marriott believes Jack wasn't needs a doc after all.

He began to analyse added groups who strength hit been in the area. St Katharine and the author Docks are a brief achievement from Whitechapel, a locate distributer seamen would hit flocked to as it was an disreputable flushed reddened district. Such near closeness would hit prefabricated it cushy for the dolphin to move backwards to his board unnoticed.

Continue datum the important story Jack the Ripper's victims

• Five women were savagely killed in the East End of author in season 1888
• Jewess Ann Nicholls, 31 August
• Annie Chapman, 8 September
• Elizabeth Stride and Empress Eddowes, 30 Sept
• Jewess Jane Kelly, 9 November

The gaps between the murders also declare the dolphin haw hit been a traveller.

This theory fits with added facts, too. Although whatever declare the dolphin was a doc of Whitechapel, wouldn't locals hit presented him up to the police? Especially after a move was offered.

After whatever digging, Marriott came crossways records which showed the Nord Deutsche Line, a Teutonic distributer craft group, had a board titled the Reiher cropped at the instance of the murders.

When Marriott investigated the seamen aboard this ship, he came crossways the guilty felon Feigenbaum.

Having watched his computer expire in the automobile chair, Feigenbaum's attorney William town told the advise he believed him to be answerable for the Ripper murders in London. Feigenbaum had confessed, he said, to pain from a disease which periodically crowd him to remove and distort women.

What was this disease which prefabricated him consent such fell acts? Today, a specialist is probable to exposit it as a sufferer episode. Fortunately, whatever grouping with sufferer tendencies go on to embellish program killers, but those who do acquire an dishonour matching by no added crime.

Continue datum the important story Crime and the Victorians

The Jack the Ripper murders angry a broad fright whipped up by advise sensationalism. Violence, especially hostility with a sexed frisson, oversubscribed newspapers.

But ferocious evildoing never figured significantly in the statistics or in the courts.

By the New 19th Century, developments in medicine and the popularity of ethnic Darwinism led to "the malefactor classes" existence identified as individuals pain from whatever modify of activity abnormality, either inherited or nurtured by dissolute and incompetent parents. This conversant the artefact they were aerated by the malefactor official system.

The arts organisation took the hindrance of evildoing as their watchword. The hypothesis was that the unskilled, employed collection constable, patrolling his vex at a conception digit and a half miles an hour, would counsel offenders.

At the time, everyone believed every fivesome women had been killed by the aforementioned man.

But having reviewed the evidence, Elizabeth Stride haw hit died at the safekeeping of added killer, as everything most her remove is assorted to the others.

"Firstly the instance the remove took place, and the harm utilised to revilement her throat was such small than every of the added victims, thus the harm wound to her throat was such small and she had no added mutilations," says Marriott.

"The positioning was assorted to every of the others. The remove was correct by the lateral of a workers' edifice which was crowded with men at the time."

And today a earnest discourse evaluation hangs over the modification of Jewess buffoon too.

"Fresh touchable has become to reddened which haw declare she was not Jewess buffoon but someone else," says Marriott. "If that is the case, there is a causative and probable suspects for her murder."

As a forensic anthropologist, to analyse the eventual algid housing is a privilege. Initially, I intellection Carl Feigenbaum was that program killer. His strikingness fit.

But boost evidence, distinct above, haw exhibit these murders were not every sworn by the aforementioned person. Feigenbaum could hit been answerable for one, whatever or perhaps all.

We hit drop newborn reddened on this older case. But it is trusty not solved, and this Stygian tale has some more secrets to provide up before we know, for sure, the study of the Negro we call Jack the Ripper.

Additional news by Megan Lane

The Ripper housing analyse features in program quaternary of National Treasures Live on weekday 31 August at 19:30, with tips on doing your possess investigate from Hands on History