A little boy had a sleepover at his grandparent's home. When his mother returned to pick him up the next morning—all three were gone. Follow along as police uncover shocking forensic evidence and learn the twist that finally leads investigators to identify a suspect.

When a triple-murder nearly wipes out an entire family, police struggle to establish a motive. At the home, investigators discover a gruesome scene and identify an unexpected murder weapon -- a crossbow. They also meet the lone survivor who fought for his life and barely escaped. The mystery deepens when a suspicious package is discovered, and the killer's double-life is revealed.