In 1973, when a renowned Canadian behavioral psychologist pursues his latest research project-- an experiment to determine whether chimpanzees can acquire advanced language skills-- he brings home a baby chimp named Zan and asks his thirteen-year-old son to treat Zan like a little brother.

"Woody Bookman hasn't spoken a word in his eleven years of life. Not when his father died in a freak accident. Not when his mother, Megan, tells him she loves him. For Megan, keeping her boy safe and happy is what matters. But Woody believes a monstrous evil was behind his father's death and now threatens him and his mother. And he's not alone in his thoughts. An ally unknown to him is listening. A uniquely gifted dog with a heart as golden as his...

Magdalys Roca and her friends from the Colored Orphan Asylum are heading southwest on the back of Stella, the giant pteranodon, to find Montez, her brother, wounded during the siege of Vicksburg; now they are heading into the heart of the fighting, depending on Magdalys's ability to communicate telepathically with dinosaurs--but one of the companions is not quite what she seems, and Magdalys's talent could make her a target for both sides.