The Blood Book: Tales, Confessions and Rumors of the Worlds is a novel by New York Times bestselling author Ted Dekker, along with Kevin Kaiser and Josh Olds, with additional assistance from Gregg Hart.

Ba'al commissions General Mustul and alchemist Grushon to study and document a variety of mythical creatures from their world, including the fearsome Shataiki bats and their interesting counterparts, the Roush.

A certain Blood Book, though not Ba'al's, as there were more than one, also plays a significant role in the plot of Immanuel's Veins, as the main character Toma Nicolescu uses the information contained within to defeat the villainous Vlad van Valerick.

There he spoke of a pair of journals, known as the "Blood Books," which would give insight into the minds of two characters from his Circle Series, presumably Thomas Hunter and an enemy.

Participants had to pre-order at least three copies of The Priest's Graveyard and email the receipts to Ted's brand manager Kevin Kaiser in order to receive a prize.