Animorphs. The invasion —Grine, Chris, author.

When Jake, Rachel, Tobias, Cassie, and Marco stumble upon a downed alien spaceship and its dying pilot, they're given an incredible power ... a power they must use to outsmart an evil greater than anything the world has ...

Time shifters —Grine, Chris, author, illustrator.

When Luke investigates an eerie blue glow in the woods behind his house, he doesn't know what he'll find there. But a scientist, a robot Abraham Lincoln riding a friendly dinosaur, and a sassy ghost were the last things ...