The story of a woman who poisoned her husband's spaghetti without him noticing will air on TV this Sunday.
If you're on the lookout for a new true crime documentary, this could be one to add to your watchlist.
The Poisoning: How to Kill Your Husband, will air on Channel 5 this Sunday (October 13), exploring the case of Heather Mook who secretly poisoned her husband.
In 2008, the 58-year-old was convicted of two counts of poisoning so as to endanger life.
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Victim, John Mook, lived to tell the tale of why his wife went ahead with the barbaric crime, but also claimed that jail might not have been the correct facility for his wife.
The then 60-year-old argued that his partner needed help and treatment.
On the steps outside of court, he said: "I think she needs some serious help and I hope she gets it."
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In an attempt to fleece his mother of £43,000, Heather Mook mixed rat poison into the pasta dish, along with an anti-depressant drug which she then served to him.
Her efforts were to make her husband confused enough for her to go ahead with the crime against his mother.
The jury took a minimal two and a half hours to find her guilty of the crimes, and it was later revealed after the case was over, that this wasn't the first time Mook had poisoned somebody.
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She actually had a previous conviction in 1982, for poisoning her seven-year-old daughter, Teresa.
Similarly, but not on the same scale as her attack on John, she had crumbled an anti-depressant pill into her child's food.
Adrian Waterman QC, prosecuting, argued that she had so many pills because she was prescribed them herself.
He said: "The stealing of the money and the giving of the drugs were linked.
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"She gave him amitriptyline to avoid discovery of her thefts."
During the trial, she was described as a 'menace to friends and strangers alike', after it was noted that she had deceived those around her one too many times.
She once ordered six BMW's with a bank cheque she had managed to scam her neighbour to hand over.
The judge ultimately described her as a 'dangerous woman', and gave her a indeterminate sentence.
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This meant that there was no set date she could be released from prison in order to protect the public, but would be considered for parole after she had served five years in jail.
The Poisoning: How to Kill Your Husband, will air on Sunday (October 13 )on Channel 5.
Topics: True Crime, Crime, UK News, TV And Film, Documentaries, Channel 5
Mia Williams