Harry Potter Fans Are Losing Their Minds After ‘PotterCon’ In Detroit Is AnnouncedHarry Potter Fans Are Losing Their Minds After ‘PotterCon’ In Detroit Is AnnouncedHarry Potter fans will be swarming The Masonic Temple in May for PotterCon, an event all about the popular J.K. Rowling's children's novels.ArtimisArtimis