Soulfall

Legend has it that there is a mysterious organization in the world that accepts women only and admits no men. On the fifteenth of every month, its members strike to punish evildoers. Their attacks are swift and lethal, leaving no survivors. The cause of death can never be determined, so the cases are always ruled accidental. No one knows who they are, and no one has ever seen them. They call themselves the Soul Reapers.