A deafening explosion rocks a historic Oklahoma City hotel, sending archaeologist Faye Longchamp-Mantooth crashing to the marble floor of the lobby. Unhurt but shaken, Faye is soon distracted by the aftermath of the explosion, which cracks open the old hotel's floor to reveal subterranean chambers that had housed Chinese immigrants a century before. In this follow-up to book 11, Undercurrents, Faye is fascinated by the tunnels, which are a time capsule back to the early 20th century. But when the bodies of three children are discovered deep beneath the city, her sense of discovery turns to one of dread, and Faye will need to find a killer.

"Fast-paced, well-plotted…. Those who like richly textured, character-driven mysteries will be rewarded."—Publishers Weekly