Stone looks into the horrific act, and finds a clue -- a brass pin -- tying the crime to a Dutch S.S. Nazi uniform, and a Hell escapee known in life as “the Angel of Mercy.”
The story finds Stone tracking a Hell escapee who isn’t actually the perpetrator or criminal of the week. That wrinkle is a welcome one, and reminds us that all evil in the world does not originate from the realm below.
Once more, I enjoy how Brimstone threads this particular needle. The show clearly exists in a universe of blacks and whites, and of good and evil, but Stone is constantly asked to make decisions that require him to think in shades of gray, and nuance.
He determines that the Angel of Mercy is innocent -- that he has paid for his crimes -- but he still must send him back to Hell, regardless.