Janet Jackson has been notably silent since her brother's death five months ago but now the fingers are flying. In an exclusive ABC interview that will air on Wednesday, Jackson admits that she believes Dr. Conrad Murray, Michael's personal physician, is responsible for her brother's death. "He was the one that was administering," she told ABC. "I think he is responsible." (Murray has admitted giving Jackson the anesthetic propofol, but denies that he's the reason he died.) Recounting the day of Michael's death, Jackson says her assistant called her the morning of June 25 and told her that Michael had been taken to the hospital. Jackson contacted La Toya and other family members but Michael was dead within hours. "It just didn't ring true to me. It felt like a dream," she said. "It's still so difficult for me to believe."