Van Helsing Season 5, Episode 13, Novissima Solis.
Welp, Bathory (Jesse Stanley) is dead, having thrown herself off the ledge of a tall building to prevent the Dark One from being able to use her as a pawn anymore. This seriously endangers our heroes plan to have her read from the ancient scrolls to stun Dracula while they can finish her off.
However, there might be a saving grace to all this: Vanessa (Kelly Overton) finds the Dark One s pentagram insignia on the back of Bathory s neck, and by carving it out and grafting it onto her own arm, she can use it to tap into Dracula s mind. Neat trick.