Healing Sands Sanitarium, southwest of Seattle, Washington, sits on the sandy doorstep of the Pacific Ocean. Famed for its restorative rest-cure, fermented diets, and Dr. Hornsby's electrotherapeutics, no one has ever died at Healing Sands. Until now. When Professor Bradshaw is summoned to investigate, he knows this was no accident, but his only clue to foul play is as insubstantial as smoke--to anyone other than an electrical engineer. In this isolated...