Episode 7 - Mockingbird
"Mockingbird" refers to Petyr Baelish, the last surviving member of House Baelish, whose last scene and revelations seems to steal the show in this episode. After saving Sansa from being thrown out the moon door in the Eyrie, he pushes Lysa Arran out the moon door, seemingly acting on impulse; exceptionally out of character considering how calculated his actions always seem. It is also now known that he is the person behind the poisoning of Jon Arran, (as well as Joffrey) meaning that, in some ways, the entire War of The Five Kings was caused by him. Littlefinger is also known to wear a mockingbird pin, and has even changed the sigil of his House to that of a mockingbird, alluding to his ability to adapt and even thrive, under chaotic circumstances, by sneaky and underhand means.