K9 handler Ryder Creed and his scent dog, Grace, return to Nebraska to join FBI Agent Maggie O'Dell and Special Investigator Tommy Pakula. A rural Postal carrier found a black plastic bag discarded in a grassy roadside ditch-- containing the partial remains of what appears to be a young woman. Just that morning another young woman has gone missing. Is her disappearance connected? Ryder agrees to search for her, but an early snowstorm blurs the landscape and grinds life to a halt. As Maggie O'Dell searches for answers about the victim, she begins to uncover a cold-blooded, ruthless killer who has murdered before. And Ryder and Grace may have walked into the killer's path. -- adapted from jacket