The 1958 Skirmish at St. Bonaventure Convent was a skirmish in 1958 between Men of Letters initiates Henry Winchester and Josie Sands and a group of demons led by Knight of Hell Abaddon.
Background
In 1958, the Knight of Hell Abaddon set up a demon factory, a place where she'd steal people's souls to transform them into demons loyal to her. Along with three other demons, Abaddon took over St. Bonaventure Convent, possessing the Mother Superior while the three other demons possessed nuns, one of which was Sister Agnes. The demons began stealing souls from people with one of their victims, Sister Mary Catherine killing two people before killing herself.
Sister Mary Catherine's suicide draws the attention of the Men of Letters, believing it to be a simple case of demonic possession, send initiates Henry Winchester and Josie Sands to investigate as a final test before they become full members of the order. Dressed as a priest and a nun, Henry and Josie claim to what they believe to be the Mother Superior and Sister Agnes that they were sent by the Office of the Inquisition to investigate Sister Mary Catherine's actions. Continuing to pose as the Mother Superior, Abaddon allows Sister Julia to guide them as they investigate. Julia leads Henry and Josie to Sister Mary Catherine's room where Josie discovers the crest of the Knights of Hell which Henry recognizes as meaning trouble.