Winter is indeed coming, and fans of HBO’s hit series Game of Thrones are getting a nice little treat to hold them over until the third-season premiere next year.

Game of Thrones show writer Bryan Cogman found time during his work on the show’s second season to write Inside HBO’s Game of Thrones. The book gives readers an inside look at how the cast, producers, storyboard artists, costume designers, and countless other crewmembers bring the world of Westeros to life.

Watch the video below to learn more about how the book came together.