Albus Percival Wulfric Brian Dumbledore, Headmaster of Hogwarts, is one of the most recognizable and mysterious figures in the Harry Potter series. Is he all-knowing or narrow-minded? Generous or malicious? What really motivated the director in the last years of his extraordinary life? We see his hand in every “seemingly” coincidence and study the sometimes impossible decisions that he had to make. In this major study by Irwin Heitman, the events of the Potter series will appear in a completely new light, and long-standing fan questions will finally be answered. In order to maintain a neutral position in relation to the infamous "battle of translations" of the HP, we will make our own translation, trying to stay as close to the original text as possible . However, for convenience, in parentheses after some names and titles, options familiar to the Russian reader from translations by the publishing houses “Rosman” (1) and “Swallowtail” (2) will be indicated [for example, Severus Snape (1 - Severus Snape, 2 - Zloteus Snape)] .