TWO sex beast killers filmed themselves dancing and laughing in the hours leading up to the moment they drugged, raped and murdered a dad-of-four.
Warped Dylan Brister, 28, and Cameron Allan, 21, recorded the TikTok videos shortly before their horrific attack on Calum Simpson, 24.
In the sickening clips, Brister – caged last week for 23 years – talks about taking drugs and says: “I’m f****ed”.
Last night, Calum’s devastated partner Bobbie Cowan, 26, said: “These videos are horrible – especially as they were taken so soon before the murder.”
The Twisted sex killer sang the lyrics “cold, cold heart” at his partner in crime in chilling TikTok videos posted online before they drugged, raped and killed a dad.
Dylan Brister mouthed the Dua Lipa and Elton John hit at Cameron Allan as the evil duo filmed bizarre party clips.
The social media footage was recorded in the two days before they murdered dad-of-four Calum Simpson, in Methil, Fife.
It is believed they were both high on drink and narcotics at the time.
Bobbie told The Scottish Sun of her revulsion that the vids remained public.
She said: “I have seen them. It’s horrible how close in time they are to what happened.
“If someone had seen the state Brister was in then maybe he’d have been reported and Calum would still be alive.”
Bobbie added: “He’s evil, like a creep from a Netflix documentary.
“Brister didn’t show any sort of emotions during the trial at all.
“He even asked to leave the stand for a cup of tea at one point. He had a disgusting attitude.
“Someone from Calum’s family shouted, ‘Rot in hell’ — and he just smirked as he went down the stairs.
“I honestly can’t get the picture of him out of my head.”
In one of five videos posted on November 1, 2021 — the day before the pair lured Calum to his death — Brister looks drunk as he lip-syncs to Sir Elton’s tune and repeats “cold, cold heart”, pointing to Allan behind him on the couch.
On the same day, Brister posted another drunken video staring at the camera and listening to loud electronic music.
COUNTDOWN TO EVIL CRIME
OCTOBER 16, 2021: Dylan Brister sets up TikTok account and posts video where he is drinking, dancing and singing.
OCTOBER 28: He posts third clip of himself singing Billy Joel’s My Life.
OCTOBER 29: Brister dances around with Cameron Allan in the background, shouting “Wow, You Can Really Dance?”
NOVEMBER 1: He posts five videos including a version of Elton John/Dua Lipa’s Cold Heart with Allan, captioned “Drunk nah never” and a laughing emoji.
Also posts a selfie with a dog, lip syncs to Adele’s Easy on Me and gyrates around the room before showing Allan and another person boozing.
NOVEMBER 2: Brister posts a video of another party, lipsyncing to Afroman’s Crazy Rap.
He pans camera to show he is with Allan and two others. In a final 2min 53sec video he moans about not having enough TikTok followers and talks about his mental health while Allan is heard boasting about cash.
NOVEMBER 2-3: Victim Calum Simpson is lured to Brister’s flat in Methil, Fife, before being drugged and raped. The dad dies from intoxication.
NOVEMBER 3: Calum’s body is found at Brister’s home at Herriot Crescent, at around 11am.
JULY 19, 2024: Brister and Allan are convicted of the rape and murder.
OCTOBER 25: The twisted killers are caged for a total of 42 years.
Allan grins and starts to make dance movements with his hands.
Brister says: “I hope you’re having a good night everyone,” before Allan blows a kiss at him.
He adds: “He’s trying to get a kiss off me.” A smirking Allan sticks his finger up at him before kissing Brister on the cheek.
The next day, just hours before the murder, Brister used TikTok to whinge to his 906 followers about his mental health.
Allan is heard boasting that he earns £3,500 a week.
In a final 2min 53secs clip posted on the night of November 2, Brister says: “I’m on TikTok, be careful what you are saying.” He then laughs at Allan.
He comments on Allan’s eyes and tells his followers he is “f****ed”.
Brister begs his followers to help him grow his account so he can use TikTok Live.
He moans: “I should be able to go live, please let me go live. I could just do with a bit of banter if you could help me, I could help you.
“I have mental health problems. It’s a bad time of the year.”
After staring at the camera for minutes, Brister signs off: “Have a lovely night, sorry I don’t know what else to say. Have a good day.
“I feel so tender, I sometimes feel like a dog.”
That same evening Calum and a pal were invited to the flat.
But the friend left and Calum was found dead hours later on November 3.
A trial at the High Court in Edinburgh heard how they spiked his drink with Etizolam and bound his wrists before filming their “depraved” attack.
Calum died from intoxication caused by the combination of the class C drug and alcohol.
His fourth child had been born just 11 days earlier.
Brister was caged for at least 23 years and Allan got 19.
Distraught Bobbie added: “We’d like Calum to be remembered for the fun-loving dad he was.”