The ceremonies of the black masque are magnificent events steeped in an erotic blend of vampire myth and fantasy. The depravity of these rituals is boundless and each rite culminates in orgiastic excess. As they prepare to enact their greatest ceremony to date, passions run high among the perverse members. Eager virgins are prepared and the sacrificial altar is readied as the masque anticipates its finest night. Unwittingly entangled in the twisted ceremony, private investigator Jo Valentine is drawn into their dark world of pleasure and pain - and none of her previous adventures have prepared Jo for her unearthly encounter with the black masque.