A torso found in a London canal is believed to be that of an actress in the popular British series EastEnders, and her older brother has been arrested. Gemma McCluskie, 29, has been missing for a week, reports ABC. The torso was found in Regents Canal close to McCluskie's home. It's not yet clear why her 35-year-old brother, Tony, has been linked to the murder. He told the Daily Mail last week when his sister went missing that he and his family "were going out of our mind with worry. She is a bubbly, outgoing, strong and independent woman.” (More Gemma McCluskie stories.)