A desperate late night phone call from Trilby Watkins embroils Annie Kirk in a fifty-year-old disappearance. Trilby, a friend from her college days, is trying to rejuvenate a health spa located in Oregon's High Cascade Mountains. Yet someone is determined to scare her off and she calls on Annie for help. When Annie, a successful mystery author, agrees to conduct a series of writing workshops at the resort, she is confronted by a maelstrom...