In the 13th Anna Pigeon mystery, she and a wheelchair-bound woman confront a fundamentalist religious sect. Anna Pigeon`s promotion to district park ranger takes her many miles away from her new husband into Colorado`s Rocky Mountain Park, where she must deal with the reappearance of two girls who vanished from a religious retreat several weeks ago, and will not say where they`ve been or what happened to the third girl who disappeared along with them. Anna receives unexpected aid in solving the mystery from Heath Jarrod, a former ice climber struggling to recover emotionally from the accident that rendered her a paraplegic, who encountered the girls at her campsite.