The Rivers of Zadaa
D.J. MacHale
 As in the other Pendragon books, this book covers Bobby's adventure and those of Mark and Courtney, his friends on Second Earth. Bobby's adventures are chronicled as an epistolary novel and those of his friends in the third-person narrative. The story starts after Bobby Pendragon has spoken with Loor, who explains to him, the lead Traveler and main character, the situation on Zadaa, introduces Bobby to her sister and her acolyte Saangi and her friends, Bokka and Teek. Soon afterwards, Saint Dane, who is disguised as a Batu warrior, beats Bobby up with a wooden staff. Bobby is almost killed but is rescued by Pelle a Zinj, the kind prince, and recovers quickly in a Batu hospital. After Bobby has recovered, he decides to start training to be a warrior. Alder, the Traveler from Denduron, joins Loor and Saangi to help train him. For a month, Bobby works hard in a deserted training camp. Finally, at the end of the month, they all celebrate his successful training but are interrupted by an attack by a group of Rokador, who shoots Bokka with an arrow and flee. As Bokka dies, he gives Bobby and Loor a map to the underground city Kidik, and tell them that Saint Dane is there. Loor and Bobby decide to attend the Batu Festival of Azhra first, because Pelle a Zinj has invited them personally. At the festival, Pelle a Zinj is killed by a Rokador. After this, it rains, but still there is no ready supply water for the Batu. This convinces the Batu that the Rokador are indeed holding back the water and they start making preparations for war. Meanwhile, Bobby and Loor begin their journey to the city of Kidik. There, they find an underground ocean of fresh water. They take a boat across this, arriving on an island where Saint Dane captures them and puts them in a prison-like room. Bobby and Loor later escape and learn that after an epidemic virus had killed most of the Rokador, Saint Dane was able to convince the survivors to attack the Batu. The plans was to hold back the water, making the Batu starve; when the Batu attacked, the Rokador would flood the entire village, drowning all. Saangi and Alder join Bobby and Loor. As the Rokador prepare to flood the underground, the protagonists foil their plans by flooding it prematurely, presumably to the ruin of both tribes. Rather than abandon one another, warriors of both tribes co-operate to escape the flood. The heroes escape from the floods by riding a 'dygo', the machine that the Rokador use for making tunnels. All the water shoots out from the underground and creates a river which flows by the city of Xhaxhu, providing water for both people. Bobby then returns to Loor's house, where he attempts to share a kiss with her. She refuses him, arguing that to become lovebirds would distract them from their purpose of preventing the destruction of Halla. Bobby accepts this without complaint. Bobby goes back to the flume to try to return to Second Earth (Earth in modern-times), whereupon Saint Dane comes out of the flume in a fury and kills Loor with a sword. He then tries to kill Bobby, but Bobby uses his training to disarm him. Bobby then raises the same sword that killed Loor as Saint Dane jumped on top of him, impaling him in a way that should have killed him. However, Saint Dane disappears and reappears at the entrance to the flume, proving the suggestion given in earlier books that he cannot be killed. Saint Dane then travels to a territory called Quillan. Bobby goes back to Loor. His own desire that she live rather than die appears to resurrect or revive her, in that her wound closes of its own accord while she resumes full faculty, memory, and mobility. Moments later, Bobby gets a message from Quillan from people named Veego and LaBerge; to investigate this, he embarks for Quillan. The story ends with him writing his record in what is revealed to be the residence of those who sent him the message. The story begins when Mark and Courtney have realized that they have accidentally destroyed the flume to Eelong trying to help Bobby. Courtney therefore becomes severely depressed and stops coming to school. Eventually she decides to go to summer school for six weeks in order to recover, so that Mark is left to read Bobby's journals alone. Throughout the summer, Mark collects Bobby's journals and reads them, and begins to have conversations with Andy Mitchell, the former school bully. Mark soon realizes that Mitchell is an adept in mathematics and became a bully for having been a misfit. Gradually Mark and Mitchell become friends. At her summer school, Courtney meets a boy named Whitney Wilcox, whom she befriends and of whom she begins to entertain romantic thoughts. Before long, he invites her out for pizza. En route, she is struck down by a black car which seems to have been following her. From the car emerges Whitney, who is here revealed to be Saint Dane. Looking upon Courtney, he remarks cryptically "I give, and I take away" and departs in the form of a raven. As Courtney loses consciousness as a result of her injuries, she sends a cellphone message to Mark, who upon inferring that she is in danger convinces Andy Mitchell to drive him to Courtney's summer school. There they find Courtney, badly injured and unconscious. They call the local ambulance and hurry Courtney to the hospital. Courtney slowly begins to recover. In the last scene of the book, Courtney's heart rate suddenly begins to slow, whereupon Andy Mitchell, unseen, brings it to normal by a means, implied, to be the same kind of "thing" used by Bobby to revive Loor. This suggests that Andy Mitchell is another alter-ego assumed by Saint Dane.