Episode #1.9 - S1-E9
Continuity mistake: Look at Alicent's hands when Lord Beesbury starts to object to the plan to usurp the throne from Rhaenyra. In the initial shot, her hands are on the table but not in the next. (00:06:40)
Trivia: This episode marks the first onscreen appearance of Storm's End, the seat of House Baratheon. It was regularly mentioned in Game of Thrones, but never seen.