Perhaps one of the most beloved installments of the Harry Potter series, Prisoner of Azkaban, thickened the plot of the Wizarding World, introducing us to the Marauders, werewolves, animagi, and time-turners. It included rich backstories and fantastic twists. But above all, it taught us about overcoming dementors (both real and figurative), the dangerous power of bias, and the importance of knowing who you are and where you come from—along with the fact that there are few things that chocolate can’t fix (or Fudge, if he has the motive of keeping you alive). What life lessons does this book teach? And twenty years later, how did it succeed, fail, or exceed expectations?