Conspiracy of Souls

Branching off from canon in the third year when an injured Sirius comes to Lupin for help. Follows Remus and Sirius as they try to clear Sirius's name and become involved in a conspiracy which runs from Azkaban to the heart of the Ministry. Mysterious wizard secret agents. Corruption. And where do dementors come from? An evil larger than even Voldemort may be at play.