Dan Greenburg: 31 books

Klatu, Lek, and Ploo head back to Groom Lake to fix their busted spaceship. But the spaceship is gone--it's been taken to Area 51. There's nothing for the aliens to do other than sneak in and search for it. Instead they find something they weren't looking for--the Great Ones! The mythic missing Looglians...

What I wanted was a cute little kitten. Instead, I got a tough tomcat that talks. And that's not all! He says he's my Great-Grandpa Julius and he needs my help. And messy litter box or not, family is family!

When Zack is given the chance to swim with dolphins on a trip to Florida, he dives right in. But before long, Zack is surprised to find that the dolphins are trying to tell him something ? and even more surprised that he can understand and talk to them! There's definitely something fishy going on...

My room is a mess. Now, usually this is not big news. But my clothes have started moving...when I'm not inside them. And the TV is floating across the room! Guess what! I'm sharing my room with a ghost named Wanda.

Who'd have thought mind reading could be such a pain? I mean, I expected to discover everyone's silly secrets. But someone is planning something very strange--and it's no joke!

Ploo, Lek, and Klatu have escaped from Area 51 and hit the road in a stolen station wagon. Where are they headed? Las Vegas, of course! After all Vegas has everything—slot machines, drive-through wedding chapels, Elvis impersonators. It’s sure to have someone who can fix their slightly beat-up spaceship!

One minute I was looking for my retainer in the bathroom. The next, I was staring at a boy who looked just like me. And I don't mean my reflection! What's going on here?

I went to visit my Grandma Leah in Chicago, and we went to a White Sox game. Doesn’t sound like such a big deal, right? Well, here’s the thing—Grandma played in the game!

Klatu is such a varna! He crashed the spaceship into planet Earth with his brother Lek and sister Ploo onboard. Stuck in the middle of the Nevada desert with nowhere to run, Ploo is captured by army Earthlings who think that she is an enemy of humankind. Can Klatu and Lek to rescue Ploo from the terrifying Major Paine? Or will Ploo be held prisoner in Area 51 forever?

"My clone looks like me. My clone talks like me. He helps me with my homework and takes care of my bullies. And he could be the answer to all my problems. Or he could be my biggest one yet!

After months of hoarding his allowance, Zack is on his way to buy a prized baseball card. But when he gets to the store, the owner tells him that someone else has just bought it. Who, you may ask, has beaten Zack out of the card? A boy named Mack, who claims to be Zack's son from the future.

Hawaii. Dream vacation. Same thing, right? Wrong! No sooner do Zack and his dad arrive at their hotel does strange things start happening to Zack. First he gets bonked on the head by a falling coconut, then the T. V. blows up, then he gets thrown off of the treadmill in the hotel spa. Zack appears to be cursed. Could it be the piece of lava rock he bought in the gift shop?

Zack's first trip to sleep-away camp gets a little hairy when legends of a mysterious creature lurking in the woods turn out to be more than just campfire tales. Is it the missing link? Yeti? Sasquatch? Bigfoot?

When Zack's friend Spencer brings a 60's-style hippie book on astral travel to a sleepover, Zack learns the ins and outs of out-of-body travel in a snap. Getting out of their bodies seems awfully easy for the boys. The problem is, how do they get back in?!