Harry Potter and the Dementor's Kiss

The third story in the series 'The Fight of Two Generations'. AU in Harry Potter's third year at Hogwarts school of Witchcraft and Wizardry. The last two years have been filled with deadly mystery. Will this year be any better, as a traitor returns for vengeance with Harry seeking them out and an ex-convict employs a dangerous friend to teach Defence? HARMONY