The 17-year-old has been detained for three years for his part in Mr Harrison's death. The killing in the drugs lair in Dunstall Hill has left Mr Harrison's loved ones heartbroken.

His daughter recalled how she discovered her dad was dead over the phone - a call she initially thought was a 'lie'. She emotionally described to Wolverhampton Crown Court how she had plans to meet her dad for food just days later but their encounter was not to be.

She said: "I will never be able to process how my dad was killed and I don't believe I will ever be able to forgive what you each did to him. My heart felt like it was on fire, being ripped to pieces. My head felt like it was about to explode. Part of me died that day."

Such was the love Mr Harrison had for his family, he would 'move mountains' for his children, his daughter said. Mr Harrison's mum described how loved ones have been left 'inconsolable'.

She said: "We never got to say goodbye. My son Deavon was stolen from me and my family by these evil, demonic human beings. We are a close family. We have all been impacted by the callous actions of these wicked people."

But she told how her son had 'fallen out of love with himself' in the time before his death. She said: "My son was not perfect, he made mistakes and bad choices but he never harmed anyone.

"Deavon was also very loving and respectful to me." The mum added: "I'm not sure that I will ever be the same person. My son will not be forgotten because he gave us so much to remember.

"If love could have saved him, he would still be here." Wolverhampton Crown Court heard how Mr Harrison had a 'long-term addiction' to drugs.

In the hours before he was killed, he spent time with a woman called Kerry Francis. She was understood to be in 'some sort of relationship' with him - and also had addiction issues.

Both took drugs, drank alcohol and booked a room at The Connaught Hotel, in Tettenhall Road, on December 29. The next day, the pair went to the drugs den in Dunstall Hill.

The property was known in the area to be an 'open door for those who needed drugs'. At about 11.20am, they arrived.

Mr Harrison made a call to Williams' drugs line five minutes later. Just after 11.30am, Williams and the youth armed themselves with 'machete-like knives'.

They headed to the Dunstall Hill spot on an e-scooter and a bike, meeting Mr Harrison and Ms Francis outside. Williams told jurors during the trial that he had 'anticipated some type of trouble'.

All walked into the drugs lair, the court was told. But just one minute and seven seconds later, Ms Francis was captured on CCTV leaving, 'quickly followed' by Williams and the youth.

Emergency services found Mr Harrison more than an hour after he was shot - Ms Francis had returned to the scene of the killing and police were then called. Grandad Mr Harrison suffered injuries to his face, two serious wounds to the back of his head and he had defensive injuries.

A small cut in his hood indicated it had been pulled down between the blasts on December 30 last year. The gun was not taken to the scene of the crime by Williams or his young co-defendant - it was said to have already been in the property.

It has never been found. Williams had been selling drugs for just over a year at the time of the killing, the court heard.

He was 'answerable to someone higher up in the chain', who told him to manage a drugs line in the area. The teenage defendant began working with Williams, acting as a 'runner' to pay off a 'debt' he owed after being robbed at knifepoint of drugs he had been selling.

Police charged Williams with murder and he stood trial at Wolverhampton Crown Court earlier this year. But he was acquitted by jurors and instead found guilty of an alternative charge of manslaughter.

Jurors also convicted Williams of wounding with intent and having an article with a blade or a point. He was cleared of a further charge of possessing a firearm with intent to endanger life.

William's co-defendant - who cannot be named due to legal reasons because of his age - was acquitted by jurors of murder, manslaughter and possessing a firearm with intent to endanger life. He was convicted of wounding with intent and possession of a bladed article.

Jurors acquitted 43-year-old Ms Francis - of Foxglove Close, Wombourne - of murder, manslaughter and wounding with intent.