Game of Thrones: Aidan Gillen on Littlefinger's Stark obsession

There's always something more to it when it involves the Starks, given his history with Catelyn

Petyr “Littlefinger” Baelish has helped to orchestrate many of the most monumental events in “Game of Thrones,” a list that includes Ned Stark’s downfall, the Stark-Lannister conflict and Joffrey’s murder.

This outsize impact is even more impressive, given his penchant for skulking at the margins of the story. The past few episodes have seen him doing the same at Winterfell, where on Sunday he unveiled his most despicable gambit yet: A scheme to turn Arya and Sansa Stark, the endlessly persecuted sisters, against one another.

Littlefinger wasn’t born bad — at least that’s the theory of the man who plays him, Aidan