Shadow of the Solstice (hardcover, released April 2025) is the 10th installment in Anne Hillerman's Leaphorn, Chee & Manuelito mystery series. The novel follows Officer Bernadette Manuelito, Lt. Jim Chee, and Joe Leaphorn investigating a murder, a dangerous cult, and a fraudulent scheme targeting vulnerable Navajo people near Shiprock, NM, during the summer solstice