https://cdnph.upi.com/ph/st/th/1741780065032/2026/upi/d025f09fe15faff30561d7a0ceda51bf/v1.5/Rhaenyra-arrives-in-Kings-Landing-in-House-of-the-Dragon-S3-trailer.jpg" /> "House of the Dragon," the "Game of Thrones" prequel series starring Emma D'Arcy and Matt Smith, returns for a third season on HBO in June.