Comic-Con, meet your friendly neighborhood, er, murder girl.
Maisie Williams, who plays Arya Stark in HBO's Game of Thrones, revealed on Instagram that she's been wandering through Comic-Con floor unnoticed -- by wearing a Spider-Man mask.
Williams isn't the only celebrity to go incognito while taking in the sights and sounds of Comic-Con. On Friday, Daniel Radcliffe posted a photo to his Google+ page, which shows him wearing a full Spider-Man suit. It included the hashtag, "#Spideradcliffe."
At last year's event, Bryan Cranston wore a Walter White mask to stay unnoticed on the floor.
All men must cosplay.