In Rio Arriba County, New Mexico, Kelly and Steve Spingola investigate the strange case of a man who appeared to have died from natural causes. But when his cremation revealed a bullet in his body, his death became a murder investigation. Is it too late to crack the case?

The "Cold Justice" team tackles the mysterious 1986 murder of a young Native American mother whose skull was found in the woods. Her infant daughter, now grown, is desperate to know if her father was involved.