Leona Lewis has had a scary run in with a stalker. According to British paper The Mirror, the “Bleeding Love” singer was followed home from the store to her new Hollywood Hills home, and was so freaked out that she actually decided to go back to her native London while she has security beefed up around her pad. A source told the paper that Lewis hadn’t been feeling comfortable in the house anyway and this was just the last straw. Supposedly, the new security system for the house will include TV monitors that are linked directly to the police department.