Speaking at the sentencing of Charlotte Collinge and the two men, Stephen Shreeves and Kelvin Dale, who she ordered to kill her husband Clifford Collinge in October last year, the judge Mr Justice Treacy described Mr Collinge's attack as:
"A brutal attack by two men fuelled by alcohol and illegal drugs, who probably didn't even know his name"
The court also heard how Mr Collinge lay on the floor with fatally injuries for almost 20 minutes, while his wife walked past his dying body.
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Arnold Bennett was best known for his 'Clayhanger' series and 'The Card'.
The 14-year-old hasn't been seen since Thursday 25 May.
The UK threat level has been reduced to severe, down from critical, which means an attack is highly likely.