JAKE RANSOM AND THE SKULL KING’S SHADOW

Eighth grader Jake Ransom (he skipped seventh grade) and his older sister Kady have lived with guardians on their family estate in Connecticut since their archeologist parents disappeared on a Mayan dig three years ago. When the two are invited to a British exposition of the artifacts their parents discovered, they are magically catapulted to the strange jungle community of Calypsos, which is peopled by Mayans, Neanderthals, Romans and others. In the dinosaur-filled volcanic crater of Calypsos, alchemic crystals work magic, but science is unknown. When the community is attacked by an evil renegade alchemist who has dubbed himself Kalvernum Rex, Jake and his new friends among the natives are instrumental in thwarting his plans. The author’s first for children starts out as a realistic thriller but takes a big left turn into fantasy without abandoning the thrills. Dollops of real science are nicely integrated, but the characterizations harbor no surprises. An author of science-fiction–tinged adventures for adults, Rollins has created a page-turning first volume in a series that will have readers with elastic suspension of disbelief clamoring for the next volume. (Fantasy. 10-14)