convicted of murdering his ex-partner after he blackmailed her about a sexual relationship she was having with a 15-year-old boy.
Jealous ex-convict Paul Robson, 50, snooped on teacher Caroline Kayll, 47, and the teenager outside her home in Linton, Northumberland, last November, and then launched a terrifying and sustained attack on them both.
Branded "a cruel and calculating coward" by the prosecution, Robson kicked Mrs Kayll in the head while wearing heavy work boots, and may have strangled her.
In his rage, he chopped off her hair in clumps and slashed her on the buttocks.She could not survive the catastrophic brain injuries he inflicted.Robson also repeatedly attacked the boy with scissors and a meat cleaver, sprayed them both with.
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