How female prison officer had sex with depraved serial killer Levi Bellfield and several other serious criminals in 'Monster Mansion' jail, according to astonishing new book

A female prison officer had sex with depraved serial killer Levi Bellfield and several other serious criminals in the 'Monster Mansion' jail, according to a new book.

The warden at HMP Wakefield, a high security prison which holds some of the most dangerous criminals in the country, slept with several inmates, the book claims.

Nearly two thirds are inside as a result of the most serious sex offences, and it has a close supervision centre for the most disruptive. Among those inside are John Warboys and paedophile Ian Watkins.

Written by Jonathan Levi and Emma French, INSIDE WAKEFIELD PRISON: Life Behind Bars in the Monster Mansion quotes Bellfield's pen pal as saying the staff member 'went around having sex with multiple inmates' but was allegedly sacked after she 'settled down with one'.

Bellfield, a former bouncer, was jailed for life in 2008 for the hammer murders of Amelie Delagrange, 22, and 19-year-old Marsha McDonnell and the attempted murder of Kate Sheedy, 18.

Three years later he was convicted of killing schoolgirl Milly Dowler, 13, who was abducted on her way home from school in Walton-on-Thames, Surrey, in 2002.

Bellfield has been gifting his friends - including black cab rapist John Worboys - disturbing cards and artwork while serving his whole life sentence in jail.

His bizarre designs include cartoon depictions of police officers on the toilet and drawings of houses and owls.  

A prison source previously said: 'He started making cards for prisoners to give to their loved ones. It would be wide-ranging. He'd draw teddy bears and flowers for the girlfriends.

'He would do funny ones too - like the guy on the toilet. The design would just depend on who it was going to. He would cater for all.

'After the cards proved popular he moved onto drawing on the back of A4 letters in his cell.'

The 50-year-old became friends with Worboys in HMP Wakefield, West Yorkshire, and he even helped the serial sex attacker win his legal bid for parole. 

The book also claims that 'Dr Death' Harold Shipman acted as an informal GP to fellow inmates.

In 2000 Shipman was found guilty of the murders of 15 of his patients by lethal injection - but his true count is estimated to be 250.

In 2004, the Ministry of Justice insisted Shipman never gave medical advice to other patients.

However, former prison officer Martin Baker said inmates told him how Shipman 'diagnosed' them with conditions, according to the Express.

Shipman, 57, hung himself in 2004 and a review concluded the prison staff could not have predicted or prevented his death.

But the book claims at least two officers were aware of his plan to commit suicide.

General secretary Brian Caton said the serial killer was checked in his single cell frequently through the night and was alive and well at 5am.

But, at the 6am check, Mr Caton said: 'He'd hung himself from a ligature, thought to be strips of bedding, and had held the curtains around himself so no one could see him.'

Also imprisoned there is child sex killer Roy Whiting, who kidnapped and murdered Sarah Payne in July 2000.

Despite the infamous inmates, even in the Monster Mansion, he is hated and the book says he will probably be murdered inside after frequent attacks.

He prefers to stay in his cell smoking, only coming out to use the sewing machine. 

And Charles Bronson apparently acts like a spoilt child, the book says.

Bronson, 71, hit killer Robert Donaldson with two hooks and two uppercuts when the sick killer tried to attack him on a wing of Category A HMP Woodhill, a source revealed in May.

Donaldson, 48, was jailed in 2005 for murdering Paul Bourke, 38, weeks before gagging a deaf 100-year-old woman and beating up her 76-year-old son while they slept.

In 2014, while serving his sentence in HMP Grendon Underwood, he slashed the throat of another inmate using an improvised weapon, severing the jugular vein, and grabbed a prison officer and threatened to cut his neck.

The former crack addict has been detained at HMP Woodhill alongside Bronson for two-and-a-half years but Bronson was so disgusted by his crimes that he had always avoided him, a source said.

The source said Donaldson had angrily charged at Bronson with his fists raised after banging into him as he walked down a landing.

Bronson is in solitary confinement due to being a prime target of his criminal neighbours, the book says.