A teenage killer knifed a ‘talented’ musician in his own home then excitedly re-enacted the murder for his pals just a few hours later.
CCTV images show 16-year-old Samuel Jones demonstrating to three female friends how he repeatedly slashed at a helpless Edward Reeve with a knife.
Jones and another 16-year-old, Jack Hindley, stabbed Mr Reeve, 35, eight times in the savage attack.
They left their victim to die in agony before meeting up with the three girls at a nearby convenience store.
There, they were filmed fist-bumping each other and callously bragging about the savage act, with Jones seen acting out several stabbing motions.
Hindley then took a call from a friend in prison and both he and Jones boasted to that person about what they had just done.
A court heard it took Mr Reeve up to an hour to die from blood loss caused by the horrific wounds.
His body was found five days after the fatal attack last New Years' Eve when armed police forced an entry to his home in Christchurch, Dorset.
Mr Reeve, an amateur musician, was a vulnerable schizophrenic who struggled with drink and drug addictions.
Two days before the attack Hindley had gone to Mr Reeve's house to deal drugs and stole a computer during his visit.
During their trial both killers attempted to blame the other for murder but the jury found them both guilty and they were jailed for life with a minimum 18 year sentence.
The Honourable Mr Justice Sweeney said: "Edward Reeve was still alive when Jack and Sam left. They did nothing at all to help him - albeit that summoning help would not have saved him.
"They took the knives, and other items that they thought might incriminate them, with them.
"Thereafter, Edward Reeve was able to get back into the house, and to move around it for a time in and in anguish, until, no more than an hour after the attack, catastrophic bleeding from the combination of all the wounds resulted in his collapse and death.
"In the meanwhile, Jack and Sam, who had each put the hood on his top up in the hope of avoiding identification via CCTV and were fist bumping, laughing, and hugging, had soon caught up with the three girls and were excitedly bragging to them about what they had done.
"During the course of that, Jack received a phone call, which was recorded at source, from a friend who was in prison.
"Both he and Sam spoke with the caller, and were again excited and bragging about what they had done."
The Mirror reported the disturbing case on Wednesday when the judge Mr Justice Sweeney lifted an order order prohibiting the reporting of the names of the defendants.
He named two "pure evil" 17-year-old boys as he jailed them for life for a minimum of 18 years for the "brutal" murder of a "vulnerable" musician.
Mr Reeve, a "talented" keyboard player, suffered multiple stab wounds in the attack at his home in Christchurch, Dorset.
Hindley, from Christchurch, and Jones, from Bournemouth, were 16 at the time of the attack.
They showed no emotion as the sentence was handed down.
Speaking after the sentencing, Detective Chief Inspector Simon Huxter, of Dorset Police, said: "There is no excuse for the despicable actions of these two teenage boys.
"Knife crime can cause tragedies and I hope this case highlights to anyone thinking of carrying a knife the devastating impact it can have on individuals and their loved ones, as well as their own family."