A man who was beaten about the head in the Essex home he shared with his elderly father was unlawfully killed, an inquest has found.
Clive Enkel, 53, was set upon after men with baseball bats barged into his home in Alderwood Drive, Abridge, near Loughton, on 25 September 2008.
He died two days later. An inquest was held in Chelmsford on Tuesday.
Police said no one has been charged over Mr Enkel's death but "no case like this is ever closed".
His attackers smashed through the front door and chased him upstairs to his bedroom, where they they subjected him to a brutal assault, police said.
In September 2009, Mr Enkel's 89-year-old father appeared in a BBC Crimewatch appeal and said he had been forced to flee his son's attackers.
'Most harrowing case'
Despite a number of new leads as a result of the programme, and what police described as a an "extremely intensive" investigation, those responsible have not been brought to justice.
Crimewatch heard Mr Enkel was a kind-natured man who cared for his father after the death of his mother, Vera. The family had lived in the house for 50 years.
His cousin, Denise, said her uncle had lost his "only child, his companion, his soul mate".
At the time, Det Insp Anne Campbell described it as "the most harrowing case I have come across in 17 years in the police".
"For a man who cared for others, Clive died in the hands of a gang who don't care about human life," she added.
Speaking after Monday's inquest, which was attended by Mr Enkel's family, Det Sgt Paul Lopez said: "I am sure that the identity of the murderers will be known outside of their own group.
"I'd like to take this opportunity again to appeal to them to contact the police and tell us what they know."
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