clare else 's husband andrew was knifed more than 200 times by paranoid schizophrenic ephraim norman , 24 , after getting a bus close to his home in croydon , south london , in april last year .
the 52-year-old had been at the pub with friends earlier that night before the stranger pounced on .
unprovoked attack , which was only stopped when police dragged him off .
the mother-of-one was woken by a team of police knocking on her door at 12.30 am on april 24 , last year .