In the fourth book of the Alien Next Door series, Halloween is just around the corner, and Harris is excited to share the holiday with Zeke, who doesn't even need a costume!
Harris is ready for Halloween and is very excited when he sees Zeke's "costume," which is just his true alien form. Harris is sure Zeke will win the costume contest at school! Zeke also uses his powers to help Harris make the best costume he's ever had, but Roxy feels...

There's probably a house pretty much like this one down the street or around the corner in your neighborhood. You know the one I mean: the big kids tell you about it when they want to scare you. They tell you about the crazy old guy who used to live there who disappeared one night, and about the weird lights that shine out from behind the curtains in the upstairs rooms when black clouds cover the moon, and about the strange noises you can hear on...

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.

In the fifth book of the Alien Next Door series, Zeke, Harris, and Roxy all try out for the baseball team, but Zeke can't resist using his powers to help him play better than everyone else.
It's baseball season, and Zeke, Harris, and Roxy all decide to try out for the team. Zeke doesn't quite know how to play baseball, but his powers allow him to pitch and hit better than anyone else! But Harris thinks that what Zeke is doing is cheating,...

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.

In the first book of the Alien Next Door series, an alien boy named Zeke tries to fit in and adjust to life on Earth, while a classmate, Harris, suspects that Zeke might not be quite what he claims to be.
Zeke the alien is on his way to his first day of school, feeling down because he has to start over again on a new planet, as his scientist parents constantly move to wherever their research takes them. When he gets to school, no one seems...

Harris invites Zeke to join him for a weekend at Beaver Scout Camp, but Zeke needs help understanding the activities and hiding his alien abilities from the other campers.

Harris and Roxy visit Zeke's house after school, then Harris's parents invite Zeke's family to dinner, but trying to convince anyone that they are aliens only gets Harris grounded.

When Zeke uses his powers to become a superstar on the youth baseball team, ignoring Harris's concern that this is cheating, their friendship is in trouble.