The Woman Who Rode to the Moon — B. Reece Johnson

With her life in shambles after her career is destroyed by a friend's betrayal, J. S. Symkin, known as Sym, retreats to El Gato, a remote development in the Sangre de Cristo mountains. Sym has come looking for peace, but discovers instead unexplained skeletons and an ancient, sacred site guarded by a mythical cougar and haunted by restless apparitions. Joined by hit artist-turned-sleuth Cordelia Morgan, Sym probes the mysteries of El Gato while exploring the nature of evil and the myriad shapes of justice.