Goofs

Arya accuses Littlefinger, "You told our mother this knife belonged to Tyrion Lannister. But that was another one of your lies. It was yours." Littlefinger never denied the knife originally belonged to him - he said that outright in Game of Thrones: Lord Snow . His lie was about the identity of the person to whom he lost the knife in a bet, which was not Tyrion but Robert. See more