Emma D’Arcy’s House of the Dragon castmates show up to support her new play

You won’t get to watch fresh episodes of “House of the Dragon,” HBO’s prequel to “Game of Thrones,” for a while, but the cast members are staying active in the interim. Currently, Emma D’Arcy (who plays Rhaenyra Targaryen) is performing in a drama titled “The Other Place” at London’s National Theatre, inspired by Greek mythology. Given D’Arcy’s captivating onscreen presence, it seems plausible that they would be just as effective on the stage.