The whole thing with the doctor (hired by the promotion company) is very strange, and the possible substances Jackson may have had in system that should not have been available to him. From a suspicious point of view, it would be awfully convenient for some to just chalk it up to “accidental suicide.”
In one of the more bizarre twists of this story...there is a claim that Jackson had a secret long term relationship with a GIRLFRIEND
http://www.thesun.co.uk/sol/homepage/news/2512217/Michael-Jacksons-pals-feared-for-his-life.html