Illustrated edition of the third book of the classic series by J.K. Rowling is full of fireworks of magical wonder, rendered in paint, pencils and pixels by Kate Greenway Medal winner Jim Kay.

“The Dark Lord lies alone and abandoned by his followers. His servant spent twelve years in prison. Today around midnight he will be freed to be reunited with his Lord."

Finding himself in a big magical mess, Harry Potter leaves the Dursleys on the Knight Bus, preparing for serious trouble. But the Ministry of Magic is chasing an even bigger threat - a dangerous prisoner, Sirius Black, a loyal supporter of Lord Voldemort, has escaped from the fortress of Azkaban. Rumors say that he plans to attack Harry, so the Ministry of Magic sends to protect the school terrible dementors, capable of sucking the soul with their deadly kiss.

During his third year at Hogwarts, Harry is haunted by ominous omens and rumors of death. He learns a lot about his past and comes face to face with one of the Dark Lord's most loyal servants...