One thing bothers me with the script: it says Mary climbed her way to CAM's office because Sherlock saw a curtain but here never was one anywhere? I like, spent years thinking Mary had been invited and had been waiting for them in his seat, hence the perfume and that everything in HLV had been a set-up to make her the weakest link of pressure points (+TShirt joke). I mean, how did she know CAM would be there if Sherlock himself hadn't known? Have I overthought all this or there's more at play?
Yeah, I haven’t read the script version yet, but from what I understand, it “reads like a terrible fanfic” (paraphrasing one of my followers who came to my inbox to bitch with me about it) and apparently is lying when it states it’s the “final” script.
I personally always thought that Janine let Mary in or some sort of plan with Mary was made (it was kind of being alluded to Mary having worked with Janine before), and then Mary went to attack Magnussen. Magnussen was clearly already there, so I do think he was in his office before going upstairs (possibly lead up there by Mary at gunpoint) and then Sherlock stumbled in on there by mistake.. I do think that it was all kind of masterminded by Janine, since she’s the one who told Sherlock about Mags’ schedule.
The only common link between them is Janine, so I still fully believe that Janine was more involved than they show (hence Sherlock seeing her in the Suffragettes in his TAB dream).
But no, I do not recall a curtain flapping around in HLV (I’m at work so I can’t confirm), but regardless, I do think that Janine fed both of them information (both possibly offering to get her out of her deal with Magnussen; one of them would surely show up). It’s the only thing that makes sense to me.
ALTHOUGH, there’s also the belief that Mary actually DID climb the building, foreshadowed in TBB with the spider who climbed up the many-stories bank building to threaten the banker. Since many of us believe Mary was part of the Black Lotus or associated with them (secret tattoo), so her climbing up to the top office, Janine letting her in, and then ambushing CAM in his room.
BAH there’s so many things that should have been answered with S4 and never was. I still believe we will find out all the links. Just. URG.