Screwdriver attacker faces jail

  A mugger who left a dog walker fighting for his life after he stabbed him in the head with a screwdriver is facing years behind bars. Jermaine McDonald, 26, leapt off his bicycle and launched a vicious unprovoked attack on Italian furniture designer Sinuhe Pianella, 31, in Dulwich Park on 27 April. Mr Pianella was taking his Spaniel puppy Pinot for walk and was sitting on the grass chatting to Marilena Stracke when the thug demanded his wallet and…