When Samantha Black shares her sandwich with a dog, his owner, Jon-a homeless man living in the Las Vegas storm tunnels-gives her a poker chip worth a fortune from the exclusive casino, Buried Pleasures. All Sam has to do is cash it in. Sam is in Vegas for one reason only-to get her friend, Evie Holt, away from sinister magician, Darian Fox, who holds her prisoner in an effort to force Sam to perform at his club, Illusions. A neon circus tent of strange and mystical acts, Illusions is one of the biggest draws in Vegas, and he's hell-bent on including Sam in his disturbing plans. The shadowy Magda Gardener will do anything to keep Sam from cashing in that chip. She knows that Buried Pleasures is the gate to Hades and cashing in the chip is a one-way ticket across the River Styx, which runs beneath the storm tunnels of Vegas. Jon is really Jack Graves, owner of Buried Pleasures, and Graves is really the god of death, himself, and if things aren't already confusing enough, he and Magda know what Sam doesn't. Sam is the last siren. That her song can kill is only the beginning of her story. Jon wants her safe on his side of the River, protected from Fox's hideous magic. But even Death fears Magda Gardener, who is none other than Medusa, and the gorgon has her own agenda. If Sam is to understand her heritage and win the battle against Darian Fox, not only will she have to trust her heart to Death, but they'll both have to work for the gorgon, whose connection with Sam runs deeper than any of them could imagine.