The third season finale of HBO’s “House of the Dragon” concluded with the death of Queen Helaena Targaryen, a tragic event that closely mirrors her fate in George R.R. Martin’s “Fire & Blood.”

In the episode, Helaena dies by suicide, leaping from the window of her chambers. Upon her return to the Red Keep, Rhaenyra Targaryen discovers Helaena's body impaled on spikes below. This act follows a period of severe premonitions, the absence of her mother, Rhaenyra's increasing cruelty, and a disturbing warning from Mysaria.

“Helaena is sort of the moral heart of the show, I think. Maybe the only character who has a proximity to power but remains kind of uncontaminated,” said Emma D’Arcy, who plays Rhaenyra. “So I think her death sort of condemns Rhaenyra to the path she’s chosen. I think there’s sort of no way back after that.”

Following Helaena's death, Rhaenyra examines an intricate tapestry she had been embroidering. The tapestry depicts Helaena’s own death and, in its next image, shows Rhaenyra dead on the Iron Throne, surrounded by dragons and flames, and appearing to be stabbed multiple times. Rhaenyra’s reaction is stoic; she drops the fabric and closes the window shutter.

“It’s funny, I was thinking about… Well, Rhaenyra, you know, her rejection of the Seven and murder of the High Septon and this attempt to reject other legitimizing institutions,” D’Arcy commented. “And in a funny way, Helaena’s power of sight is another kind of sort of institution of legitimacy.”

While the show largely adheres to Martin's book, a key difference lies in the instigating factor. In “Fire & Blood,” Helaena’s death is driven by the grief over her youngest son Maelor being killed by a mob. Martin had previously expressed criticism over the omission of Maelor from the show's plot, noting that Helaena’s suicide in the initial draft lacked a clear triggering event.

Fans have drawn parallels between Helaena's death and that of Tommen Baratheon, who also jumped to his death from a Red Keep window in “Game of Thrones.” Showrunner Ryan Condal confirmed that while not the exact same set or window, the parallels between the two characters and their tragic ends are intentional, reflecting echoes and reflections between the series.