Holy water
In "Hourglass" Black Cross is attacked by Mrs. Bethany and several members of Evernight including Balthazar who is captured. Bianca and Lucas help Balthazar escape without being caught. When Bianca is feeding, Raquel and Dana walk in and although they agree not to say anything, Bianca is woken in the night by Black Cross who tie her up and begin to torture her. Lucas is also splashed with Holy water and burns because he has fed Bianca. Lucas and Bianca escape with the help of Dana.