This has nothig to do with drug use, but on the night that Nelson Rockefeller died (in the “saddle”, so to speak), his security people tried to clean up the scene before the NYPD arrived. Apparently, they put his pants on backwards...
An NYPD spokesman said that at no time was anyone alone with Ledger’s body. I have a hard tme believing that. I think Olsen’s security people, or the Masseuse, or both removed something incriminating from the room.
Hmmmm....I hadn't thought of that before.
The timeline from the Post link certainly supports the possibility that the first "Olsen Private Cop" who arrived on the scene could have done that.