A. I. Newton

While his scientist-parents study Earth, second-grader Zeke tries to fit in but Harris, a classmate, notices his abilities and sets out to prove Zeke is an alien.

It's Halloween time and Harris can't wait for Zek to wear his true alien form costume.

Harris and Roxy try to help Zeke the alien over his confusion about Valentine's Day, and to figure out who sent him an anonymous candy-gram.

While his parents recharge their ship before heading back to Tragas for good, Zeke, with the help of Harris and Roxy, has time to learn about one last human tradition: the sleepover.

Publisher Annotation: Harris and Roxy have hidden away on Zeke's family's spaceship and are headed to Tragas! Zeke's parents freak out when they discover the kids aboard, but they've come too far to turn back. So that gives Harris and Roxy two whole days to explore the alien planet with Zeke while the ship refuels before they all have to fly back to Earth. But, much like Zeke had to on Earth, they have to blend in. Will they be able to hide the fact...