Margaery doesn't need to know the specific instrument Cersei's using — she only needs to know that Cersei hates her guts, and Cersei is so ruthless she had no problem going after Ned Stark despite having a couple of hundred loyal men behind him. Margaery's late husband Renly knew the score — as soon as he saw that…

I'm getting frustrated by the characters who keep getting caught by the Sparrows — it's like the bad horror movies where people wander around the summer camp at night by themselves with nothing but a flashlight low on batteries.

It seems like the obvious solution is to bring on Nathan Fielder as a producer and call the movie "Dumb Old Sherlock Holmes." You could also sell tickets for a dollar, as long as people were willing to hike 10 miles up a mountain, camp overnight and solve impossible riddles.