Baby Reindeer became an overnight phenomenon when it was launched on Netflix on April 11, with the dark drama exploring comedian Richard Gadd's stalking ordeal.
The woman in question, disguised under a new name "Martha" in the series, was portrayed by Jessica Gunning, with Gadd bravely taking on the role of his younger self in the form of the fictional character, Donny Dunn.
Fiona Harvey, 58, is the woman who has recently made headlines globally firstly for claiming to be the inspiration for Martha and later denying ever stalking Gadd.
She has threatened to sue the 35-year-old as well as Netflix over the dark comedy-drama, and has gained so much public interest she was invited to speak to Piers Morgan on his YouTube show, Uncensored.
The interview has racked up more than 11 million views, and Harvey has continued to try to clear her name, claiming Gadd is the one who was obsessed with her.
How much can her words in the controversial interview be trusted?
GB News spoke exclusively to body language expert Richard Stanton, who revealed three "red flags" he noticed from the conversation.
While the specialist explained his analyses can't be accepted with complete accuracy, he shared his perceptions of Harvey.
"It's not just the breathing or the sweating - there are a few other things that people do," Stanton explained.
Stanton gave three examples of particular behaviours from Harvey that raised alarm bells for him.
Eye contact
Harvey's inability to hold Morgan's gaze for a short period was a big teller of guilt, according to the body language expert.
"Eyes are a big one," Stanton explained. "We tend to look in someone's eyes for about five seconds."
Harvey was trying to break off from Morgan's eye contact and break away.
"People don't like prolonged eye contact and they don't like silence, people try to break both as they find it too intimidating, a lot of people will try to fill the blank space straight away. And that is sort of what she tried to do."
Sarcasm
Another "red flag" for Stanton is making light of the situation.
"They [guilty people] also use sarcasm which is what she did," he recalled. "So when Morgan basically said, 'Did you do it?' The way she replied wasn't consistent with what an innocent person would do.
"She also made a joke out of it whereas an innocent person wouldn't (if) wrongly accused.
"She was just sort of sarcastic and she realised on one of them, when asked if she dated him, she said something like, 'I don't date little boys without jobs,' and then she took a breath and then she kind of went, Oh that sounds terrible doesn't it, I don't mean that' - but she did. What calmness conceals, anger reveals."
Blink rate
Another thing eagle-eyed viewers may have spotted about Harvey which Stanton certainly picked up on was her blink rate.
Speaking about the main features that indicate deception, he added: "So for example, blink rate increases.
"So people's blink rate will increase when that stress level goes up. People who are being honest will display more congruent signs with what they're saying.
"She did exhibit a lot of these things. For example, when she was asked something, her blink rate changed."
He went on to state that as Morgan questioned her "there were times that her blink rate would go crazy."
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When asked about Gadd, on the other hand, Stanton didn't believe he displayed any signs beyond the levels of expected stress from being on TV.
"His behaviour is pretty consistent," he noted. "We're not seeing anything beyond normal stress levels of being on a TV interview."