The late summer heat in Echo Valley, Colorado, turns lush greenery into a tinder-dry landscape. When a young girl mysteriously disappears, long-buried grudges rekindle. Of the two Flores girls, Marisa was the one people pegged for trouble. Her younger sister, Lena, was the quiet daughter, dutiful and diligent - right until the moment she vanished. Detective Jo Wyatt is convinced the 11-year-old girl didn’t run away and that a more sinister reason lurks behind her disappearance. For Jo, the case is personal, reaching far back into her past. But as she mines Lena’s fractured family life, she unearths a cache of secrets and half-lies that paints a darker picture. As the evidence mounts, so do the suspects, and when a witness steps forward with a shocking new revelation, Jo is forced to confront her doubts - and her worst fears. Now, it's just a matter of time before the truth is revealed...or the killer makes another deadly move.