Chilling moment man takes stepdaughter's kids to McDonald's after killing her

A killer who beat his stepdaughter to death with a hammer then stabbed her husband before calmly collecting their children from school and taking them to McDonald's has been found guilty of murder.Derek Martin, 67, 'just flipped' and brutally attacked Chloe Bashford, 30, in her own home after a row erupted over money.He grabbed a hammer and bludgeoned her on the head several times before walking to the kitchen and fetching a knife - then stabbing her eight times as she lay on the floor.Martin then lay in wait for Mrs Bashford's husband Josh, 33, to return home at lunch before chasing him upstairs and stabbing him four times and strangling him to death with a belt.The grandfather attempted to clear up the carnage before calmly picking up the deceased's children from school.