Bone Deep - Delta Green one shot

Cleveland, Ohio, present day…You are part of an internet sleuthing group that works to crack some of the stranger unsolved cases. Today, one of your members contacted you with one of the most disturbing mysteries of all: he just found his own mother, brutally murdered in her own home. Interrupted in the act, the murderer escaped, apparently taking another body with them. All they left behind was a corpse, a black body bag, and questions about where the missing body would be taken—and for what reason. In this Delta Green scenario, the PCs may be witnessing the work of an emerging serial killer, or they may have stumbled across something much worse.