Hackers put a Dark Mark on top of the Student Center on the morning of the July 21, the release date for Harry Potter and the Deathly Hallows, the seventh and final book of the Harry Potter series written by J.K. Rowling. Eric D. Schmiedl—The Tech May. 9, 2016 Facebook Twitter Reddit Print Hackers put a Dark Mark on top of the Student Center on the morning of the July 21, the release date for Harry Potter and the Deathly Hallows, the seventh and final book of the Harry Potter series written by J.K. Rowling. Eric D. Schmiedl—The Tech