The former flatmate of Grace Millane's murderer has spoken out for the first time in a new ITV documentary series.
Millie Mason spoke about her time living with Jesse Kempson who murdered Miss Millane in Auckland, New Zealand, after meeting her on Tinder on 1 December 2018 - the day before she was due to turn 22.
Since then, it emerged that eight months before Kempson murdered Miss Millane, he raped another British tourist who he also met on the dating app.
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The new documentary - The Murder of Grace Millane: Social Media Murders - will include exclusive interviews with the investigators closest to the case combined with both revealing police interview footage with the culprit Jesse Kempson and CCTV footage that tells the story of a truly chilling case that sparked worldwide media attention.
Other individuals also speak for the first time including Grace's friends, a fellow traveller and Millie Mason, the former flatmate of Jesse Kempson, as she recounts her own experience of knowing the cold-blooded killer and the suspicions she had of him prior to this event.
In a teaser clip from the show, which airs Monday 15 November at 9pm, Millie Mason explained: "We just all started getting a bad feeling."
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She went on: "One night when I wasn't at the house, neither was one of my other flatmates so it was just the one girl left alone in the house.
"He came back, he was drunk and she was scared enough that she slept with a knife that night.
"We eventually stopped wanting to be alone in the house with him, you just knew you shouldn't be near him alone. It does make you wonder, what else he was hiding or what else wasn't true?"
Speaking of the moment she was told Kempson murdered Miss Millane, she added: "It was awful. The friend of ours who took the room after Jesse moved out messaged us three girls, and we were all living in London at the time.
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"We'd been following the story because people don't really go missing in New Zealand, let alone a young girl. I woke up to our group chat and he said 'It was Jesse'.
"It was a shock. It goes all around in your head - I wasn't imagining it. Shock more than anything but I don't know if I was surprised - you are but you aren't."
The Murder of Grace Millane: Social Media Murders will air on Monday 15 November on ITV2 at 9pm.
Topics: Entertainment, TV and Film