A Tale of Two Sociopaths

During a high risk case Sherlock accidentally creates some casualties. The government is ready to throw him in prison but instead provides a deal. He was given the choice of either six months court order therapy or eight years in prison. He chooses therapy but wants to choose him on psychiatrist. He decides on Hannibal and the Board of Psychology gives Hannibal the offer. Hannibal accepts and establishes a temporary residency in England for his new patient. This doesn't stop Hannibal from being a cannibalistic murderer and a new series of murders takes Sherlock's interest. He decides to find this new killer in secret while he still continues his therapy. Hannibal as well develops a growing interest in Sherlock.