This is the terrifying moment the 'Poundland killer' roamed the streets lunging at petrified shoppers armed with a knife moments after he stabbed a man to death. Trevor Joyce, 36, attacked defenceless Justin Skrebowski, 61, inside the discount shop in Abingdon, Oxfordshire, in December. He was charged with murder, but admitted manslaughter on the grounds of diminished responsibility, and was sentenced to life imprisonment earlier this week. But now astonishing footage has emerged of the moments after the slaying, which shows schizophrenic Joyce threatening shoppers.