Charlie Cosser heartbroken dad makes a solemn promise to his tragic son Charlie, while sister Eloise reveals the devastating moment she heard her brother’s heart stop
After his 17-year-old son Charlie was fatally stabbed, dad Martin Cosser made a solemn double promise – he would get justice and he would dedicate the rest of his life to preventing knife crime.
Charlie was murdered by 16-year-old Yura Varybus at an end-of-term party on 23rd June 2023 in a farmhouse in West Sussex. Medics worked tirelessly to try to save his life but tragically, Charlie died two-and-a-half days later in hospital.
His father Martin broadcast his grief on TikTok, and now the story of how the murder case went viral is being told in the second series of ITV1’s TikTok: Murder Gone Viral.
In heartbreaking scenes viewers will see Charlie’s younger sister Eloise recall how police came to the family home in the night. She recalled: “I woke up to the sound of the door being banged on really hard. The police officer tells us she’ll be driving us to the hospital where they’ve taken Charlie. I didn’t have time to put my shoes on. I just ran out in the darkness into the police car.”
One of the three stab wounds had damaged Charlie’s aorta and he had a cardiac arrest in the ambulance. However, medics operated in the ambulance then managed to stabilise him before his family gathered at his bedside. Tragically, Charlie died when his heart broken family agreed to turn off his life support on the advice of doctors, whose tests showed Charlie had suffered irreversible brain damage.
Eloise revealed how she watched the life drain out of her beloved big brother, who was nicknamed Cheeks, as his heart stopped beating. She said: “I can’t even describe how it feels like to watch your brother die. I put my head on his chest and I was listening to his heart beat for the last time. I looked at his face and I could see the colour draining from his face and he became even more pale than he was before. I was told I needed to step back because I was in such a state but I’m refusing because I don’t want to leave his side in his last moments and that’s when I put my head back on his chest and realised his heart was no longer beating.”
Losing his son galvanised dad Martin to do everything he could to stop knife crime. “I just held Charlie’s hand and I made him a promise. I promised him justice but the main promise was that I would spend the rest of my life educating people about the dangers and immeasurable impacts of knife crime. I felt so isolated and alone in the immediate aftermath and I just recorded into the phone.”
Martin posts under his son’s name @CharlieCosser17. His most watched video sees Martin reacting tearfully to Varybus’ conviction and has been viewed 4.7 million times.
ITV reporter James Dunham, who covered the case, revealed how the posts made the murder go viral. He said: “Once Martin started posting his videos on Tiktok he soon gained a lot of attention but because police had arrested their prime suspect quite quickly, there wasn’t the usual Tiktok speculation about who the killer might be or where they might be hiding. Instead we got raw, unfolding agony.”
The documentary reveals how the violence unfolded. Charlie was stabbed three times after an altercation at the party. When he was arrested he initially pleaded guilty, but was later given permission to change his guilty plea to not guilty, forcing the family through a lengthy murder trial.
“An application had gone in for him to vacate his guilty plea,” Martin tells the documentary. “As far as we were concerned he’d already been found guilty, he was guilty. That was torture, absolute torture.”
However, the evidence against Varybrus was overwhelming. While the murder weapon was never recovered, there were eye witness accounts that reported Varybus being “drenched in blood”, and one witness said they heard him say “I’ve stabbed someone”. He later burned the clothes he was wearing and was also seen changing the settings on his mobile phone which detectives believe was intended to tamper with the evidence of his location. Varybrus was convicted of murder and possession of a bladed article and sentenced to life imprisonment with a minimum term of sixteen years. Because Varybrus was under eighteen at the time of the killing, reporting restrictions initially protected his identity, but the judge lifted these after conviction, allowing the press to publish his name.
On the show Charlie’s dad Martin holds up the grey t-shirt Charlie was wearing on the night he was murdered. “You can see three stab wounds clearly on there,” says Martin. “Actually they are really small knife wounds and yet they caused catastrophic damage.”
Martin’s campaigning helped make the story a national talking point and start his work to educate people about the horrendous ramifications of knife crime. Now Martin and his wife Tara have set up a charity called Charlie’s Promise which raises awareness of the dangers of carrying and using a knife.
Martin said: “I set about putting the wheels in motion and setting up a charity called Charlie’s Promise and the talks I go out and give are to prevent and make a difference to knife crime in this country. And while there is air in my lungs I will continue to tell the story of my little boy and how incredible he was and make a difference in this country to prevent other families like ours going through this misery.”
TikTok: Murder Gone Viral begins on Tuesday 21st 9pm, ITV1 and ITVX. * Follow Mirror Celebs and TV on TikTok , Snapchat , Instagram , Twitter , Facebook , YouTube and Threads .
