Vampire off revenants—are common in vampire folklore. Garlic is a common example, a branch of wild rose and hawthorn plant are said to harm vampires, and in Europe, sprinkling mustard seeds on the roof of a house was said to keep them away. Other apotropaics include sacred items, for example a crucifix, rosary, or holy water. Vampires are said to be unable to walk on consecrated ground, such as that of churches or temples, or cross running water. Although not traditionally regarded as an apotropaic, mirrors have been used to ward off vampires when placed, facing outwards, on a door (in
Alex Cross Her death motivates Cross to go after Shafer in vengeance and later kills him in "London Bridges". After breaking up with Christine, Cross partners with FBI agent Betsey Cavalierre, to hunt down Mastermind in the novel "Roses Are Red". They become friends and start to take a liking to each other. As the investigation proceeds, she suggests a relationship, which Cross declines at first, feeling that he isn't ready. Betsey pushes him and the two later make love, officially starting a relationship. Betsey begins to worry what will happen after the case is over, since they have two separate jobs