Every Hidden Thing by Kenneth Oppel (Booktalk)

Paleontologists love their fossils, and most of them are not thought of as people who get into fistfights with each other in public. Rachel's and Samuel's fathers are both paleontologists who hate each other's guts. Even worse, both men are competing for the same hidden fossil: the rumored bones of a giant "Rex" buried somewhere in the Badlands. It's the late nineteenth century, and this find would elevate one of them to worldwide fame.

So it would be logical that Rachel and Samuel would hate one another, too, but they don't. They learn to appreciate how much they have in common with one another: they're both kind, analytical, and fascinated with fossils. Both of them want to find these secret bones, too, and they have to find a way to keep their bond hidden from their fathers.

Every Hidden Thing by Kenneth Oppel. 2016: Simon and Schuster Books for Young Readers. 368 pages. Booktalk to older teens due to some adult content.