The #1 New York Times-bestselling third installment of the All Souls series, and the basis for the final season of A Discovery of Witches, coming soon to AMC+, Sundance Now, and Shudder.

In The Book of Life Diana and Matthew time-travel back from Elizabethan London to make a dramatic return to the present–facing new crises and old enemies. At Matthew’s ancestral home, Sept-Tours, they reunite with the beloved cast of characters from A Discovery of Witches–with one significant exception. But the real threat to their future has yet to be revealed, and when it is, the search for Ashmole 782 and its missing pages takes on even more urgency.

In the third volume of the All Souls series, Harkness deepens her themes of power and passion, family and caring, past deeds and their present consequences. In palatial homes and university laboratories, using ancient knowledge and modern science, from the hills of the Auvergne to Venice and beyond, the couple at last learn what the witches discovered so many centuries ago.