Game of Thrones introduced viewers to the true meaning of Melisandre's night terrors this week, as it looks like the feud between Stannis and Renly will be settled in an unorthodox manner.

And that point is driven home by the official HBO description of next Sunday's "The Ghost of Harrenhal," which states that the "Baratheon rivalry ends" and the reactions to it will be very different for Catelyn and Littlefinger.

Watch the network teaser for what's to come now:

Also on tap:

• Tyrion will learn about a mysterious secret weapon.
• Theon will sail to the Stony Shore and continue to prove his mettle to his father.
• Arya will receive an intriguing promise from Jaqen H'ghar.
• The Night's Watch will regroup at an ancient fortress beyond The Wall.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.