Mary Horror is back She has her spell book, but needs the blood of the four witches who originally created it in order to make it her own and become immortal and all-powerful. Sheriff Tom is well aware of that, and will stop at nothing in order to destroy her and get the book back for himself. The third time's a charm in this, the ultimate showdown between Sheriff Tom and Mary Horror. Witches Blood, the final installment of the Mary Horror Trilogy