<sod >The prosecutor said: 'Mr Imber made brief eye contact and describes the male having a "crazed smile" on his face as if he was enjoying it or that he was under the influence of drugs.< eod>< sod > The prosecutor said: 'Mr Imber made brief eye contact and describes the male having a 'crazed smile' on his face as if he was enjoying it or that he was under the influence of drugs.' Israeli Yovel Lewkowski, 18, was in London on a four-day holiday with her family and had spent the evening in the West End before she was knifed in the arm.< eod>