Let us revisit Jermaine. In several recent interviews after Michael's death, Jermaine has repeatedly denied knowing anything about Michael's (prescription) drug use. Compare please, the Larry King Live (LKL) interviews and then the 2003 book proposal excerpts.
Aug 7, 2009: Jermaine on LKL CNN (minute 7:07 says didn't know about drug use)
Links coming soon!