Revealed at last: Baby P's evil killers

Tracey Connelly, 28, and her lover Steven Barker, 33, were responsible for the death of 17-month-old Peter Connelly in his blood-spattered room in August 2007. He suffered 50 injuries, including fractured ribs and a broken back.

It can also be disclosed that the third defendant in the case, Jason Owen, 37, is Barker's brother. And the Barker brothers' past does not stop at taunting and torturing a toddler.

They were also accused of assaulting their own grandmother, and Steven Barker was reportedly prosecuted by the RSPCA for animal cruelty.

Connelly's mother said today her daughter deserved to "rot in hell" for her part in Peter's death.

Mary O'Connor, 59, said: "I haven't got any sympathy for her at all. Maybe now she will feel fear and understand what my grandson went through as he was being tortured to death.

"She robbed me of my grandson. My heart is broken and I'll never forgive her for that. I can't."

Barker and Owen's father also condemned his sons, saying: "What they did was awful and they deserve to be punished. I don't care what happens to them. Everyone thinks they are monsters and I don't think any different."

Connelly, who has four other children, was involved with social workers throughout her childhood and knew how to manipulate them.

She started a relationship with Peter's father, who was considerably older than her, when she was just 16 having lied to him about her age. They went on to marry.

The Barkers - Owen changed his name - were charged with assaulting their grandmother Hilda Barker, 82, at her home in Whitstable, Kent, in 1995.

She told police they locked her in a wardrobe to make her change her will in their favour. The case was dropped the following year, before the Barkers came to trial, after the frail grandmother died from pneumonia.

Connelly and Barker, of Penshurst Road, Tottenham, north London, were sentenced in May for causing or allowing Peter's death.

They could not be named until now for legal reasons, although their names and photographs have appeared on the internet.

Father-of-four Owen was also jailed for the same offence, which took place while he was staying at Peter's home with his 15-year-old runaway lover.

In addition to Barker's presence at the house, social workers had also missed Owen and his girlfriend, who cannot be named for legal reasons.

The semi-detached, church-owned house was filthy. Connelly's two dogs and Barker's rottweiler Kaiser, which was used to terrify Peter, also lived there.

Doctors, social workers and police failed to save Peter despite him being on the Haringey Council child protection register.

After the trio's Old Bailey trial ended in November last year, there was public outrage at the way Peter was let down by the authorities. All three defendants were cleared of murder.

Judge Stephen Kramer ruled that there was insufficient evidence against Connelly and Owen. Barker, whom Peter called "Dad", was cleared of murder by the jury.

But Connelly pleaded guilty to causing or allowing the death of her son and the brothers were convicted of the same offence by the jury.

In May, Barker and Connelly were tried in secret for the rape of a two-year-old girl just before Peter's death. Barker was convicted of rape but Connelly was cleared of a child cruelty charge.

They were tried under the names of Young and Wilson to avoid the jury linking them to the Baby P case. The brothers and Connelly were jailed later that month.

Barker was told he had played the major part in Peter's death and was given 12 years. He was also jailed for life with a minimum term of 10 years for raping the girl. Connelly was given an indeterminate sentence with a minimum term of five years.

Judge Kramer told her she was "manipulative and self-centred". "I am satisfied that you acted selfishly because your priority was your relationship with Barker," he said.

Since being jailed, she has written to a friend saying that she wants to party when she is released. She is also still claiming she did not know about Peter's abuse.

Owen was given an indeterminate sentence, with a minimum term of three years. He was said to be more worried about being discovered at the house with his 15-year-old girlfriend than protecting Peter.

He was reportedly accused of raping an 11-year-old girl when he was 13 - although the case was later dropped - and jailed for arson after setting fire to his own house in 1999.

Connelly, Barker and Owen are all said to be trying to appeal against their sentences.

It is understood Connelly was recently moved from London's Holloway Prison to Low Newton, near Durham.

Connelly and Barker's crimes are so notorious that they are likely to need protection - and possibly new identities - on release from prison, an expert said.

Harry Fletcher, assistant general secretary of probation union Napo, acknowledged that such a move would be "hugely controversial".

He said: "The question will be, how well known are they in five years' time, or whatever? And will Baby P still resonate with the public in terms of horrendous crime?

"If it does - and I suspect it will - the probation service and police will have no choice but to put in place a protection plan."