Mark is seventeen years old and stuck in a time loop, although he doesn't care in the least. It is summer and on this day, he endlessly repeats the reading of his favorite book and dreaming of answering some of the unknowns that he has never been able to solve. But then he discovers that Margaret, a mysterious and fascinating girl, is also caught in the loop with him. Together they set out to find all the wonderful things that can happen on that day, a journey that will lead them to spontaneous and perfect moments, but also returns them to the dark secret that lies at the very heart of their endless day. The Map of Perfect Moments is a compellingly funny and romantic story with a dazzling concept of time, written by Lev Grossman, bestselling author of The Silver Arrow and The Wizards trilogy.