Plot question in Sherlock Season 3 Episode 3
February 16, 2014 4:10 AM Subscribe
Plot question about the final episode of Sherlock (BBC), Season 3 [spoilers inside]
posted by amicamentis to Media & Arts (17 answers total) 4 users marked this as a favorite
I've watched the episode twice now and haven't been able to figure out a plot point. It's possible that it doesn't have an in-universe answer, but I'm curious to how it could have been done:
Sherlock and John Watson manage to get into Magnussen's office via the engagement ring trick. When they get up there, they find Sherlock's girlfriend and another guard knocked unconscious, and (spoiler alert) Mary Watson with a gun aimed at Magnussen.
Question: how was Mary able to get into the office before Sherlock and Watson? Did she enter through another way than the elevator? Was she watching Sherlock's girlfriend answer the call on the video screen? If she knew they were coming up, why didn't she stay hidden?
It seems unlikely that she used the same method of Sherlock, because then she'd be wearing street clothes instead of the all black ninja outfit.
Sherlock seems to have figured it all out, because he recaps it to Watson later and says that when she finished calling the ambulance she went back the way she came.
Another thing I can't figure out: why was Magnussen in his office to begin with? I thought Sherlock chose that time because he was going to be at dinner. Why wouldn't Mary Watson have waited until he left the building to assassinate him, rather than risk having to break in and then escape?