Aemond Targaryen finally woke up in House of the Dragon season 3 episode 5, and the person watching over him wasn’t a maester or a soldier. It was Alys Rivers, the self-proclaimed witch of Harrenhal, and she’s been quietly running the most unsettling storyline of the season.
Gayle Rankin’s character has haunted the corners of Harrenhal since season 2, dropping cryptic lines and scaring off bounty hunters while everyone waited to learn who she actually is. Episode 5 didn’t hand over easy answers, but it moved Alys from background figure to something closer to Aemond’s captor, caretaker, and possibly his new obsession.
What the Books Say About Alys Rivers
Fire & Blood, the George R.R. Martin history that the show adapts, never settles on a single version of Alys. The book is narrated through the dueling, often contradictory accounts of Grand Maester Munkun, Septon Eustace, and the court fool Mushroom, and each one describes her differently.
Munkun calls her a serving wench with an interest in potions. Eustace insists she’s a woods witch. Mushroom goes furthest, claiming Alys was an enchantress who bathed in the blood of virgins to stay young, and that she had actually served as wet nurse to Lyonel Strong’s sons Harwin and Larys decades earlier, making her old enough to be their grandmother by the time of the Dance of the Dragons.
Every account agrees on one detail: she looked far younger than she should have, and all of her own children were stillborn before Aemond entered the picture.
Is Alys Rivers Actually a Witch, or Something More?
The show has leaned into that ambiguity rather than resolving it. Alys has already told Daemon in season 2 she isn’t a woman at all, calling herself a barn owl cursed to live in human form, and episode 5 added another cryptic thread when Aemond asked who she was and she answered only that she was one that has been grieved.
That line, paired with her earlier remark that the child who grieves a mother is sometimes the one she loved best, hints at a lost child or lost identity the show still hasn’t explained. Combine that with her apparent ability to summon a bat swarm to scare off bounty hunters, and Alys reads less like a simple herbalist and more like something genuinely supernatural, closer to a greenseer or a figure touched by older magic than a woman who just knows her potions.
Helaena’s resurfacing prophetic visions this episode only reinforce that House of the Dragon is doubling down on magic as a real force in this world, not just superstition passed around by frightened soldiers.
The stakes of that ambiguity are growing fast. In the books, Aemond becomes fully besotted with Alys after taking Harrenhal, to the point that he can’t bear to leave her, and after his death she declares herself his widow and rules the castle as its witch queen.
Episode 5 is already tracking that path, with Aemond curling into her lap after nightmares and slaughtering the men who attack her without hesitation. If the show follows Fire & Blood, Alys isn’t just a caretaker. She’s about to become one of the most dangerous figures left standing in the Riverlands.
House of the Dragon season 3 episode 6 airs July 26 on HBO and HBO Max.