Ormund Hightower is becoming a key player in 'House of the Dragon.' Here's how he dies in the book.

James Norton as Ormund Hightower in "House of the Dragon" season three. Theo Whiteman/HBO Lord Ormund Hightower becomes a key player in "House of the Dragon" season three. Portrayed by James Norton, the character is Alicent's cousin and commander of the Hightower army. Here's a rundown of what happens to Ormund in the book, "Fire & Blood." Warning: Spoilers ahead for "House of the Dragon" season three, episode four, and the book "Fire & Blood." There are plenty of Targaryens vying for power…