Coming September, a lavishly photographed companion book will keep Game of Thrones fans warm throughout the long winter of the series’ hiatus. Inside HBO’s Game of Thrones, by show writer Bryan Cogman, contains plenty of extras: character profiles, on-set photography, maps, family trees, and interviews with cast and crew members. We have a sneak peek at the book’s preface by George R.R. Martin, the author of the TV show’s inspiration series A Song of Ice and Fire; plus, the opening pages of the chapter on Daenerys. Take a closer look at EW’s full exclusive here.