Sam admits that he stole books from the Citadel and his father's sword. Daenerys tells Sam and she killed his father and brother. Sam tells Jon about the High Septon's journal.
Daenerys executes Varys the same way she executed Randyll Tarly and his son Dickon in "Eastwatch" - by having Drogon burn him to death. Tyrion reminds Jaime the secret place where they met in "Eastwatch" - the room with the dragon skulls, beneath the Red Keep.