The daughter of serial killer Joanna Dennehy has revealed how her loving mother turned into a man-hating serial killer.

Shianne Treanor said Dennehy ‘deserved to die in prison’ and has apologised to her mother’s victims for her horrendous crimes.

The 19-year-old was raised by her father John Treanor who moved Shianne away from Dennehy when she started to act violent.

Dennehy had been leading a life consumed by alcohol, casual sex and self-harm and Shianne says she turned from a loving parent to a man-hating psychopath.

Shianne Treanor (pictured) says her mother Joanna Dennehy ‘deserved to die in prison’ and has apologised to her victims for her horrendous crimes

Convicted Cambridgeshire murderer Joanna Dennehy in 2006 with Shianne (left) and her second child (centre)

Joanna Dennehy smiling and posing with a knife (not used in any of her crimes) shortly after murdering men, which was shown to jurors as evidence 

After visiting her mother in prison for the first time, Shianne spoke of the emotional roller coaster she had been on, growing up in the shadow of a killer.

Speaking to the Sunday Mirror she said: ‘I was told nothing about my mum and I wanted answers.

‘She deserves to spend the rest of her life in prison.

‘I’m sorry to the victims. I can’t ­imagine what they went through.’

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Share Joanna Dennehy pictured wuith a young girl and a teddy bear, the young girl is though to be daughter Shianne

Joanna Dennehy aged 26 with Shianne. Shianne, now 19, has vowed she won’t turn out like her mother 

In 2013 Dennehy stabbed three men, torturing one and then dumping the bodies. Shianne had been attending a sleepover at a friend’s house when her father called her to tell her mother had killed someone.

When Shianne turned 18 she decided it was time she learnt about her mother and last October, penned her a letter.

‘I was really cold because I thought she hated me. I told her I wasn’t looking for a relationship with her, I just wanted to know why.

‘But I got a letter full of love and warmth and how much she wanted to have me in her life. I just cried. It was so emotional.’

Joanna Dennehy in 2004 with John Treanor. John eventually left he after she stabbed a knife into the carpet at their home

She said she had been nervous ahead of the meeting at HMP Bronzefield in Surrey and highlighted that she had been ‘shaking’ as she entered the prison.

‘When I got into the visit hall I had to take a double look when I saw her. She looks ­completely different.

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