The Great Thirst Part Four: Persecuted (A Serial Archaeological Mystery)
Cherub Rider has a mission Keith isn't sure he can go along with -- protect Keith at all costs, even if it means leaving Talia behind. They have to depend on the mysterious ancient amphibian skin for a totally unexpected, possibly lifesaving, mission. Is the Morse Code message tapping ALIVE real? Is a bag of gray dust the end of all their hopes to prevent the Great Thirst?