The final volume in the The Library Trilogy, following THE BOOK THAT WOULDN'T BURN and THE BOOK THAT BROKE THE WORLD.

Mark Lawrence is married with four children, one of whom is severely disabled. His day job is as a research scientist focused on various rather intractable problems in the field of artificial intelligence. Between work and caring for his disabled child, Mark spends his time writing, playing computer games, tending an allotment, brewing beer, and avoiding DIY.