In a Harry Potter novel, Sirius Black is a convicted murderer who escapes from this island prison in the North Sea
Convicted murderer Sirius Black has escaped the Wizards' Prison and is... [DOC] [TLE] Azkaban - The Harry Potter Lexicon [PAR] Far out in the icy waters of the North Sea lies a tiny island that is home to one of 
the most terrible places on earth: Azkaban, the wizarding prison (PA3, Sch1, Pm).