This is the fourth full episode of the Goshawk Universe, which means it's a sequel to Animalie Carnivalie, which is a sequel to Adjustments and Adaptations, which is a sequel to An Altered World View. I highly recommend that you read them in order.
L&O episode credit (and consider this warning of potential spoilers): "Tombstone" by Rick Eid
Special thanks (again) to the Harry Potter Lexicon.
"I hope I never get so old that I can't peek behind the scenes and see the amount of politics that's mixed in this medicine before it's dished out to the people as 'pure statesmanship.'" – Will Rogers
[Chapter 1: Shot]