Nico, the son of Hades, and his boyfriend Will, the son of Apollo, travel to Tartarus, the deepest, darkest part of the Underworld as they attempt to rescue an old friend.

"In a warlike land of wind and sunlight, "ringed by a restless sea," live Rhaskos and Melisto, spiritual twins with little in common beyond the violent and mysterious forces that dictate their lives. A Thracian slave in a Greek household, Rhaskos is as common as clay, a stable boy worth less than a donkey, much less a horse. Wrenched from his mother at a tender age, he nurtures in secret, aided by Socrates, his passions for art and philosophy. Melisto...