In case you can’t remember which Westeros houses are at odds with each other or which characters are even still alive, HBO will give you a chance to refresh your memory by airing a “Game of Thrones” marathon leading up to the show’s fourth-season premiere, reports the Los Angeles Times’ Show Tracker.

The marathon starts Friday at 9 a.m. PT, with HBO2 airing all 30 episodes of the series twice, the story notes. The fourth season will premiere Sunday evening.

The fourth season is expected to tell the events of the latter half of “A Storm of Swords,” the third novel in the series by George R. R. Martin. HBO is also updating its online viewer’s guide, which offers recaps, behind-the-scenes videos and interactive maps.

“Those who want to go further in-depth into the world of ‘A Song of Ice and Fire’ author George R. R. Martin will have to wait until October for the printed ‘The World of Ice and Fire,’ which is a fully illustrated history of Westeros and Essos with plenty of original text by Martin himself,” the story notes.