The documentary has been made available on Prime Video and details how the mother-of-two murdered three men over a 10-day period in March 2013, before absconding.

Dennehy pursued her lethal rampage as she targeted two additional victims, who both miraculously survived the stabbing attacks.

The killer has been handed a whole life order for her offences and will never be freed.

Apart from Moors Murderer Myra Hindley and Rosemary West, Dennehy is the only other female serial killer to receive a life sentence without parole.

Nevertheless, after becoming involved with a group of fairground workers, who visited her local town when she was a teenager, Dennehy’s life would take a dramatic turn.

Dennehy began drinking and taking drugs aged 13, before departing home and starting a relationship with John Treanor, who was five years her senior.

The couple, who remained together for over a decade, experienced periods of homelessness, before they secured a flat and she learnt she was expecting her first child at the age of 17. During her pregnancy, Dennehy abstained from alcohol and substance misuse, but soon after the birth of her first daughter, she relapsed into addiction.

Her former partner Treanor revealed in the documentary that he was the primary caregiver for their child, causing significant tension in their relationship.

Dennehy would later find herself incarcerated for a violent crime and sectioned, before being diagnosed with a severe personality disorder.

Forensic psychologist Dr Helen Hart commented in the documentary: “Joanne was diagnosed with antisocial psychopathic personality disorder.

“People diagnosed with antisocial personality disorder don’t care about society’s rules.”