Solving a murder is like putting together a giant jigsaw puzzle. But these puzzles are not fun and games. They are life and death.  Grave Mysteries recounts some of our nation’s most bewildering murder investigations, following investigators as they solve the case, piece by piece. Every new piece of the puzzle seems to send the investigation into surprising new directions. But in the end, one crucial piece is found that allows us to reconstruct the murder from the beginning.  With a complete understanding of what happened, the police finally uncover the culprit and the shocking truth.