How could Molly know about dead M? I thought about that a lot, too. If my second theory, that the whole thing will go down as Rich Brook's suicide, is correct, this is not a problem. She doesn't have to know.
Otherwise there is the possibility, that S phoned Molly and told her to remove M's body (which won't be possible without Molly having some help, of course, since M was not fat but a grown up man), and tv just did not show this phone call. For me, that's the least likely scenario. Also I cannot imagine, that Molly would arrange a cover up on her own accord, since she was probably ALREADY assisting Sherlock to go underground, so there was no need to protect him from any kind of short term consequences.
Or S had always planned for M to be dead, suicide or otherwise, and had made arrangements with Molly (and other helpers) beforehand, what to do with the body. The possibility, that Sherlock had always planned M to be dead, is appealing, because in the original story Holmes is more actively involved in Moriarty's death and triggers his fall by applying some kind of martial arts movements, called 'baritsu' by Doyle. It would also fit in neatly with his talk about not being his brother(who let M go after the interrogation), being on the side of the angels, but not being one of them, and being ready to shake hands with M in hell. Also, since S planned his own fake death in advance, he must have had some plan, how to prevent M from discovering the fake(if the fake was visible from the edge of the roof top, that is). If he planned him to be dead, this would not be a problem. The big question here is, how he planned him to die, because triggering a suicide is a VERY unpredictable procedure - unless you have a REAL good instrument for applying pressure, like the cabbie from SiP, or like M himself, who turned S's friends into hostages. Also S seemed to be genuinely shocked by M's sudden suicide.
Last edited by sherlocked (March 19, 2012 8:26 pm)