 While hanging a picture over the fireplace, Joan opens a hidden panel and discovers a wall safe. Contacting the man they bought the house from, Joan and Brad discover he knew nothing about it, and the original owner (who died leaving no heirs) might have left something valuable behind. Ignoring Brad s instructions to not open the safe until he has a witness present, Joan finds a treasure map inside and enlists a friend to dig for the treasure in her backyard.