M. D. Spenser Libri

Virginia's best friend is a ghost who plays games with her and won't let her quit. The ghost wants her as a playmate forever.

Never make a Mayan mad at you! Unfortunately for Harry, that's just what he does. He and his archaeologist parents are deep in the jungle of Guatemala exploring ancient Mayan ruins. There, Harry finds a far different world than the one he knows back home. The jungle is a world of intense heat, kid-eating snakes, and bugs the size of trucks. A kid could get killed here! But when Harry unearths the skull of a Mayan ruler, fear completely takes over. That's when a century-old curse is released, threatening danger, doom, and destruction to Harry and his parents.

On vacation with her scientist father, Julie is troubled by the ghost of a spoiled girl who lives in the swamp.