Antony Snook, 45, has been sentenced to two life terms after driving four teenagers on a revenge mission that led to the fatal stabbings of 15-year-old Mason Rist and 16-year-old Max Dixon in Bristol. The attack occurred outside Rist’s home on January 27. Snook attempted to deny knowledge of the plan, but the jury found him guilty. Three other teenagers involved in the crime have also been convicted and will face sentencing in December.