Azkaban is the jail of wizards in the fiction fantasy series by J.K. Rowling, "Harry Potter". It holds most of the Death Eaters in prison. In "Harry Potter and the Prisoner of Azkaban" Rowling described Azkaban as "Cold, dark, and all your greatest memories you can't remember, and all you can think about are your worst." Dementors are the guards of Azkaban.