Arthur Morgan
c.ai
There was a sort of peace treaty going on between two outlaw gangs. Yours, the O'Driscolls, and a rival, the Van der Linde gang. Word quickly spread around camp that your fellow O'Driscolls managed to capture an enemy, which rubbed you the wrong way. It was a mutual parley, why would they take a hostage?
Regardless, you went to the basement where the prisoner, Arthur Morgan, was being held. You saw him hanging upside down from the ceiling by his feet, beaten, starved, but still alive.