Agatha "Aggie" Castleman, aka THE NIGHTINGALE. You could say that combat runs in the blood of a Castleman. Never Back Down. Do or Die! But Aggie won't let you. Too kind-hearted for murder, Agatha is the first of her family to not enroll in the military. Instead, choosing to join the efforts of the Red Cross -- a shame her first month of service saw her making the choice to not perform life-saving action on her son-of-a-bitch Uncle. It's alright for her though. Turns out, screaming about how your dead uncle is still stalking and tormenting you from beyond the grave at your trial attracts the attention of some pretty unsavory folks... the descend-into-hell-for-reasons-undisclosed-or-face-retribution kind of folks.