The Book of Names, Jill Gregory, Karen Tintori

In each generation, there are thirty-six righteous souls who hold the world in fragile balance… When fifteen were killed, Mt. Vesuvius erupted. The elimination of eighteen triggered the Inquisition. Other deaths led to natural disasters across the globe—even world wars. Now that there are only three left, the question is: WHAT WILL HAPPEN NEXT? With the world hurtling toward destruction, it’s up to one man to put an end to the cycle...and save those whose identities remain hidden in THE BOOK OF NAMES