Lady killers; THE WOMEN BEHIND MOST HORRIFIC OF MURDERS.
AT 23 Amanda Knox should be enjoying her life as a young woman.
Instead she is behind bars for the murder of Meredith Kercher - her former flatmate who was butchered and sexually assaulted while studying in Italy.
But since she was convicted in 2009and sentenced to 26 years in prison Knox has always protested her innocence and is in the middle of a lengthy appeal.
Knox though is not the only lady killer whose actions have horrified and appalled all right-thinking people.
We look at some of the most notorious female killers both at home and abroad.
Catherine Nevin WHEN Tom Nevin was brutally murdered in Jack White's Inn on March 19, 1996 there was widespread mourning for the man known as a gentle giant.
He was killed with a shot from a nine pellet shotgun while counting the day's takings in his pub near Brittas Bay in County Wicklow.
And none seemed as grief-stricken as his widow, Catherine.
But even as Catherine Nevin stood by the graveside, a single red rose in her hand, the rumours were starting.
Four years later she was found guilty of murdering her husband and guilty on three counts of soliciting others to murder.
The Black Widow as she became known was sentenced to life in prison.
THE SCISSOR SISTERS LINDA and Charlotte Mulhall were just 23 and 30 when they carried out the brutal murder of Farah Swaleh Noor.
Noor was the boyfriend of their mother Kathleen in March 2005 when he started touching Linda in a sexual way it began a series of brutal and horrific events.
Watched by their mother, Charlotte stabbed Noor more than 23 times and Linda struck him with a hammer.
His head and penis were sliced off and the rest of his corpse dismembered by the women. He was later dumped in Dublin's Royal Canal where a piece of his leg still wearing a sock was spotted near Croke Park 10 days later.
When Charlotte and Linda were charged with murder in December 2005, their father, John Mulhall, hanged himself in Phoenix Park.
The women were dubbed The Scissor Sisters and their trial judge said it was the most grotesque killing he had come across.
Charlotte Mulhall was given the mandatory life sentence and Linda Mulhall a 15-year sentence for manslaughter.
MYRA HINDLEY MYRA Hindley is one of the most infamous murderers the world has ever seen.
The brooding image of her mugshot has been made into art, notably by Andy Warhol.
Along with lover Ian Brady she carried out the Moors murders between July 1963 and October 1965.
The Manchester pair killed five kids - Lesley-Ann Downey, 10, John Kilbride and Keith Bennett, both 12, Pauline Reade, 16, and Edward Evans, 17.
Four were buried on the bleak Saddleworth Moor.
The pair went on trial at Chester Assizes in April 1966 after the bodies of Lesley-Ann and John were found.
Brady and Hindley received life sentences.
She appealed on compassionate rounds but was turned down.
In 2002 Hindley died in prison at the age of 60.
AILEEN WUORNOS AILEEN Carol Wuornos was an American serial killer who killed seven men in Florida between 1989and 1990.
A woman with a history of robbery and violence turned to prostitution to help fund her life with girlfriend Tyria Moore, a hotel maid.
Wuornos claimed the men she killed raped or attempted to rape her while she was working as a prostitute.
Tyria Moore was implicated but achieved prosecution immunity for testifying against Wuornos.
She was convicted and sentenced to death for six of the murders, and executed via lethal injection on October 9, 2002.
Charlize Theron won an Oscar playing Wournos in the film Monster which was released a year after her execution.
APPEAL J Amanda Knox in court in Italy VICTIM Gentle giant Tom Nevin VICTIM Farah Swaleh Noor VICTIM Lesley-Ann Downey VICTIMRichard Mallory