In the sixth book of the Alien Next Door series, Harris explains Valentine's Day to Zeke, and Zeke develops a crush! Valentine's Day is right around the corner, and Harris explains the holiday and its traditions to Zeke. When Zeke gets an anonymous valentine, Harris is excited to help him figure out who sent it, but Zeke is confused at the customs of Earth, and his efforts to get a girl to notice him by doing what Harris tells him to don't go quite right. Will Zeke be able to turn things around and show his valentine his feelings?

In the sixth book of the Alien Next Door series, Harris explains Valentine's Day to Zeke, and Zeke develops a crush!

In the first book of the brand-new early chapter book series, the Alien Next Door, 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 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 to notice anything strange or different about him except Harris, a kid obsessed with science fiction and aliens. Harris sees Zeke doing extraordinary things but can't convince anyone, least of all his best friend, Roxy, that Zeke might be an alien. Roxy just thinks Harris is jealous that she's becoming friends with Zeke. But when Roxy invites Zeke over to Harris's house, will Harris find a way to prove that he's right?

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, since none of the other players have his powers, and he's also concerned that someone might discover Zeke's an alien. But Zeke doesn't see a problem with this, causing tension in their friendship. Can Zeke and Harris save their friendship, or will they strike out?

In the second book of the Alien Next Door series, Harris and Roxy go over to Zeke's house and meet his strange family. Will Harris be able to prove to her that they're all aliens? Harris has his suspicions that the new kid at school, Zeke, is an alien, but he hasn't been able to prove it to his best friend, Roxy. When they're both invited over to Zeke's house, Harris thinks this is the perfect opportunity for him to research Zeke's alien family and show Roxy that they're all from another planet. But Roxy is perfectly fine playing with all of Zeke's alien technology which she just thinks is "hi-tech," and as a thank you, Harris's parents invite Zeke's parents over for dinner. At dinner, no one but Harris seems to notice all the strange things Zeke's family is doing-like making food levitate to their mouths. However, Zeke realizes that Harris is the only one noticing these things and decides to use this opportunity to have a little more fun at dinner. . . .

In the eighth book of the Alien Next Door series, Harris and Roxy have stowed away aboard Zeke's spaceship and are flying to his home planet of Tragas! 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 that they're the aliens on this new planet?

In the seventh book of The Alien Next Door series, Zeke's parents have completed their research on Earth, and Zeke may have to move away! Zeke the alien comes home one day to find his parents packing. They tell him that their mission researching Earth is finished, and they're all going back to Tragas to be assigned to a new planet. Zeke is sad to once again leave and go to an unfamiliar place, especially now that he has great friends on Earth in Harris and Roxy. Harris is just as upset when Zeke tells him, and together, they come up with a plan to try to stop Zeke's departure. Will they be able to stop his family from going back to their home planet?