Devil's Lair is a fantasy novel set in Dante's Inferno.
A medieval knight leads a quest through Hell to recover the Holy Grail from the Devil.
The knight, Marco da Roma, is joined by: Giovanni Boccaccio, an expert on Dante; William of Ockham, an English friar; and Nadja, an epileptic with the gift of prophecy.
As the Black Death sweeps through Europe, these unlikely heroes confront the Devil—and their own demons—to forestall the Apocalypse.