1. Author George R.R. Martin was asked if he had a resolution or ending to the seemingly endless conflict. He replied that the end would be a cloud of dust or snow being driven by the wind across a vast graveyard full of tombstones.
2. Carice van Houten was previously asked to audition for a different role when season 1 was shot, but schedule conflicts prevented her from auditioning.
She was asked to come back to audition during shooting of season 2, and was cast as Melisandre.