The Thing on the Doorstep #1 (of 5)

Daniel Upton and Edward Derby have been best friends almost their entire lives, right up to the point Daniel shoots Edward dead in the Arkham Sanitorium - a crime Daniel swears he didn't commit, despite all the evidence. What happened on that fateful day in Arkham? What is the truth behind this seemingly mindless act of violence? Witness the beginning of this doomed relationship and Edward's slow descent into a horrifying world beyond his control.