You are in the cemetery with your amigos and familia, celebrating el Dia de los Muertos. It's getting late, and you want to visit the gravesites of your great-grandparents one more time. You stoop to arrange some flores, relight one of the velas, and brush away a few leaves . Then, you say adiós and return to your familia. But, everyone is gone! You run to the gates of the cementerio and find they are locked. There are cuatro different locks. Fortunately, the spirits of your ancestors have left you some clues so you can open the locks and go home to sleep in your own cama.