The doting daughter who became a cold-blooded killer: True crime doc lays bare sinister case of seemingly-innocent woman who MURDERED her own PARENTS after they uncovered her twisted web of lies about failing grades and forbidden romance

An upcoming documentary is set to delve into the chilling case of a seemingly doting daughter who carried out a plot to execute her own parents in a crime that shook a quiet Canadian town.

Jennifer Pan, who lived in the upscale neighborhood of Markham, had spent nearly a decade weaving a web of lies to cover up her falling grades and forbidden romance - until her parents began to untangle the truth.

Her mother Bich Ha and father Huei Hann, who had arrived in Toronto as refugees from Vietnam, eventually confronted her before Jennifer plotted to have them killed in a fake home invasion.

The then 24-year-old shelled out $10,000 for assailants to enter the family home and shoot her parents in the head - but miraculously her father survived.

Here, FEMAIL has laid bare the sordid details as Netflix's What Jennifer Did gets set to unravel the case.

Jennifer Pan, who lived in the upscale neighborhood of Markham, had spent nearly a decade weaving a web of lies to cover up her falling grades and forbidden romance - u ntil her parents began to untangle the truth

Her mother Bich Ha and father Huei Hann, who had arrived in Toronto as refugees from Vietnam, eventually confronted her before Jennifer plotted to have them killed in a fake home invasion

Jennifer, who was a first-generation Canadian, had excelled both as a student and as an ice skater in her formative years, according to school friends who previously spoke to Toronto Life.

However, she later stopped dedicating herself to her studies when she was 'snubbed' for a valedictorian award for her eighth grade class.

Her grades began to slide to the point where she was averaging 70 per cent in all of her classes except music by the first year of high school - but she kept her parents in the dark.

Karen Ho, who went to the same elementary school as Jennifer, told the outlet that Hann was the 'classic tiger dad' who gave up everything to move to the US and labored at a tool manufacturing job so that his two children could have a better life.

Like many immigrant parents, he expected his children to perform at the top of their class so that they could get into the best colleges that would lead them to high-paid careers. 

Afraid for her parents to find out that she was slipping, Jennifer decided to forge her report cards to show straight As using old progress reports, scissors, glue and a copy machine.

For the most part, Jennifer was actually getting Bs which was 'respectable for most kids but unacceptable in her strict household,' according to Ho. 

Her grades were good enough to get her into Ryerson University on early admission, and she told her parents that she would spend two years there studying science before transferring to the more prestigious University of Toronto to study pharmacology like her father had always wanted.

The then 24-year-old shelled out $10,000 for assailants to enter the family home (pictured) and shoot her parents in the head - but miraculously her father survived

The intruders dragged Hann out of his room and down into the living room, while pretending to be staging a home invasion by tying Jennifer's hands to a bannister

The group stole some money hidden around the home and then led the parents to the basement where each was shot multiple times

However, in her last semester Jennifer failed calculus, which kept her from graduating and Ryerson withdrew their admission offer. 

Instead of fessing up, the student continued to go about as if nothing was wrong. She accepted her father's offer of a new laptop, started buying used biology and physics textbooks and even pretended to attend freshman week in September.

As for questions about how she was paying for college, Jennifer doctored papers saying she had received a loan and told her parents she had won a $3,000 scholarship. 

When classes started, Jennifer took public transport downtown every day, where instead of attending lectures, she would go to public libraries and take notes on topics she thought she would be learning in her first-year science classes. 

And it was a pretense that Jennifer kept up for two whole years.

Her father started asking about transferring to the University of Toronto and she again fed her parents a lie by saying she had been accepted.

She convinced them to let her stay with a friend downtown a few days of the week when in fact she was living at her high school sweetheart's house. 

Another two years passed, and it was time for Jennifer to 'graduate' from University of Toronto. 

This time, she and boyfriend Daniel Wong found someone to forge a straight-A college transcript. 

She then told her parents that because of over-crowding at the school, each student was only allowed one guest at graduation, so she gave her ticket to a friend, not wanting to make one of her parents feel left out. 

But her near-decade of deceit eventually came crashing down when she told her parents that she had gotten a volunteer job working in the blood-testing lab at SickKids hospital.

Police found splatters of blood trailed throughout the house as one investigator branded it as 'something we had never seen before'

Jennifer told police in interviews: 'All I could hear was my dad screaming on the street. I was yelling at him but he wouldn't come in'

Her father grew suspicious after he noticed she had neither a uniform nor a key card to get into the building.

Hann decided to take matters into his own hands and one day insisted on dropping her off at work before having his wife tail Jennifer inside the hospital where she was nowhere to be found. 

The next morning, he then called the friend that Jennifer was supposed to be living with and found out that she never stayed there. 

Ultimately, the Pans confronted their daughter and she conceded that she had never attended the University of Toronto and had been staying at her boyfriend's house. 

Hann felt betrayed and had initially banished his daughter from the house before his wife convinced him to let her stay with a strict set of ground rules. 

For the first two weeks, Jennifer was banned from using her computer and cellphone and after that time was up her parents had to be in her presence when using them.

Forbidden from seeing her boyfriend, their relationship began to fall apart and Wong started seeing someone new.

Jennifer was left furious but, after briefly rekindling things with Wong, they schemed to have both her parents killed so the young couple could move in together and collect a $500,000 inheritance.

Wong introduced Jennifer to one of the hit men, Lenford Crawford, who agreed to do the hit for $10,000.

But Wong soon decided to return to his other girlfriend and asked Jennifer if she still wanted to go through with the hit, to which she replied: 'I want it for me.'

On November 8, 2010, Jennifer's mother had been watching TV and her father was sleeping in his room.

It was at this point that she is said to have texted the killers and signaled for them to come into the house. 

Boyfriend Daniel Wong (pictured) introduced Jennifer to one of the hit men who agreed to do the hit for $10,000

Eric Carty (left) and David Mylvaganam (right) were both found guilty of their involvement in the crime and sentenced to time behind bars

Crawford and his associates David Mylvaganam and Eric Carty walked in through the unlocked front door - each bearing their own gun.

The intruders dragged Hann out of his room and down into the living room, while pretending to be staging a home invasion by tying Jennifer's hands to a bannister.

The group stole some money hidden around the home and then led the parents to the basement where each was shot multiple times.

Her mother died of a point-blank gunshot wound. Her father was shot in the face - but miraculously survived.

The killers fled and Jennifer pulled out a cellphone from her waistband to call 911.

She sounded panicked and out of breath as she told the operator: 'Help me, please. I need help. I don't know where my parents are.

'Some people broke into our house and stole all this money. I could hear my parents yelling. Please send help.'

In subsequent police interviews Jennifer said she 'heard two pops,' adding: 'My mom screamed. I yelled out for her. And a couple more pops.

'All I could hear was my dad screaming on the street. I was yelling at him but he wouldn't come in.

'I don't know if he didn't hear me. He just wouldn't come in.'

Police found splatters of blood trailed throughout the house as one investigator branded it as 'something we had never seen before.'

When Hann woke up from a medically-induced three-day coma, he told investigators details of the home invasion that put the eye of suspicion on Jennifer. 

Netflix's What Jennifer Did is set to be released on April 10

He said that he saw his daughter talking to one of the men 'like a friend' and that her arms were not tied behind her back while she was being led around the house.

Investigators bought the then 24-year-old in for questioning and she quickly admitted to hiring the men to kill both her parents. 

However, she claimed that her relationship with her dad mended and she called the murder-suicide plot off and had nothing to do with what happened. 

Police did not believe her story and she was ultimately charged.

Pan, 28, was convicted of first-degree murder as well as attempted murder in December 2014.

She was found guilty alongside boyfriend Wong and two thugs she hired to help carry out her plot - Crawford and Mylvaganam. 

All four got life sentences with no chance of parole for 25 years on the murder conviction and life for attempted murder with the sentences to be served concurrently.

Judge Cary Boswell said at the time that he handed down the maximum sentence for attempted murder because Hann only survived the 'crime of terrifying violence' through sheer luck.

'Each of the offenders knew that he or she was involved in a murder plot,' and understood the 'abject immorality' of it, Boswell said.

Pan's family members did not attend the trial but both her father and brother sent written statements.

Hann wrote: 'When I lost my wife, I lost my daughter at the same time. On the day Bich died, I feel I died too.'

He said he could no longer work and had been unable to return to the family home since the attack - adding that it was also impossible to sell the house because the murder case was so widely known.

'I hope my daughter Jennifer thinks about what happened to her family and can become a good, honest person someday,' he added.

Pan's brother Felix said the murders would follow him the rest of his life. 

Carty was tried later but was convicted of conspiracy to commit murder after co-operating with the Crown and admitting to the plot. He was given 18 years.

Following his sentencing he was fatally stabbed in prison, according to reports.

Netflix's What Jennifer Did is set to be released on April 10