Natural selection or serial killer? Discovering the truth will be deadly. Three Zion National Park visitors are dead. Though everything points to bear mauling, newly hired ecologist Lettie Larson doubts an animal is the culprit. Her suspicions bring her into close contact with head investigator Rome Foster. As Lettie's ex-husband, Rome is the last man with whom she wants to work. Yet with an all too human predator loose in the backcountry, their past differences can only be pushed aside for so long. On the hunt for a savage killer, will they be able to rekindle old feelings while protecting themselves from an unimaginable danger? From Harlequin Intrigue: Seek thrills. Solve crimes.

Justice served. Discover more action-packed stories in the Red Rock Murders series. All books are stand-alone with uplifting endings but were published in the following order: Book 1: Manhunt in the Narrows Book 2: Disappearance at Angel's Landing Book 3: Murder at Lava Point Book 4: A Drowning in Emerald Pool Book 5: Killer in the Backcountry.