Lucretia (Cree) Black is a parapsychologist whose investigative methods include in-depth historical research and psychological analysis. When she's asked by her former mentor, renowned neuropsychiatrist Mason Ambrose, if she would examine the case of a fifteen-year-old boy suffering from bizarre and frightening symptoms, Cree refuses to get involved. Physically and emotionally exhausted, she's planning to take some time off. But Ambrose is persistent, so Cree reluctantly finds herself heading for a private boarding school on a Native American reservation in New Mexico. Nothing in Cree's background as a Harvard-trained clinical psychologist or her experience as a paranormal investigator has prepared her for Tommy Keeday's case. A talented young Navajo, Tommy has recently been enduring violent, agonizing seizures that his family believes are signs of possession by a chindi, a hostile spirit. As Cree struggles to find answers, she becomes increasingly aware that Tommy and the people who surround him have some deep and disturbing secrets. The follow-up to City of Masks, a Booksense 76 pick, this second novel in the Cree Black series is a thrillingly plausible supernatural mystery, a passionate love story, and a thoughtful exploration of Navajo culture and identity in modern America.