the day i was wooed by death

[AU] Harry Potter's sanity is hanging by a thread. He is a means to an end for the Aurors and as long as he gets the job done, and they get to take the credit, they don't care what happens to him. He is a priceless asset with the ability to extrapolate and get inside a killer's head. And with a new string of Muggle murders, Harry is put to the test more than ever before.