All Hail Chaos by Sarah Rees Brennan — book slip

Rae, a fantasy reader, finds herself transported into the world of her favorite series, "A Time of Iron." In "All Hail Chaos," she navigates the perils of a kingdom on the brink of war, where undead armies roam and a revolution brews. As the villainess, Rae must make wicked bargains and engage in a fake engagement with the irresistible emperor, her favorite character who now poses as the greatest monster in the land. With her friends on the run and the plot more deadly than she imagined, Rae faces the ultimate challenge: to change the narrative and survive.

For fans of "Assistant to the Villain" by Hannah Nicole Maehrer and "Dreadful" by Caitlin Rozakis.