Dan Greenburg: 31 books

A hypnotist's show turns out to be way more than Zack bargains for when he is pulled out of the audience, put into a trance, and his body is "taken over" by the spirit of someone from the past. And that's only the beginning, because the stubborn spirit won't go away when the show's over! It's hard enough having just one self to worry about. What will Zack do with two?

Late one night when Zack hears strains of "Heartbreak Hotel" coming from the fridge, he discovers the possibility that Elvis lives on...as a turnip! Talk about getting back to musical roots!

What would you do if your fortune cookie fortunes started coming true? Confucius says something very weird is going on! Could his thirteenth adventure be Zack's unlucky number?

Zack's classmate Andrew Clancy is always bragging. Everyone knows he's a big liar. But suddenly, Andrew is having trouble hiding the fact that he isn't telling the truth, and every time he tells another whopper, his butt grows bigger-will it ever stop?

Zack isn't thrilled about having to get a tooth pulled, but a trip to the orthodontist proves a lot hairier than he ever expected. Nice old Dr. Silver has been replaced by the fang- toothed Dr. Jekyll, a mouthwash-guzzling mad scientist whose secret experiments have gone ker-plewy!

It seems like a regular field trip to a natural history museum—until Zack gets locked inside for the night and discovers what really goes on in those display cases when no one is watching. A tribe of curious Neanderthals, rampaging woolly mammoths, prehistoric food shortages . . . it’s just another wild adventure for Zack!

Mummies are cool, but they’re creepy, too! Zack has faced aliens, vampires, time-travelers, ghosts, and Bigfoot—now find out what happens when he meets teenage mummy Ikhnaton (Icky for short).

One minute, it was an Egyptian cat stature. The next, it was real, live cat with sharp claws. And I have the scratch to prove it! This was one trip to the museum I would never forget.

Klatu, Lek, And Ploo finally have a day off from their job as extras on a hit sci-fi TV show. So what should they do around Los Angeles for a day? Go to Dizzyland, of course! The amusement park has everything, from roller-coasters to ferris wheels to funhouses. It even has a small zoo. But when Klatu,...

After thier spaceship is taken by the Great Ones, Ploo, Klatu, and Lek return to Las Vegas. There they discover an infestation of Elvisimpersonators, in town for a convention. Klatu, Lek, and Ploo are sure the odd-looking humans are up to no good, and it turns out that they're right . . . for once....

Zack is nervous about the fifth-grade Halloween dance. He doesn't know how to dance and he doesn't have a date! When Zack meets Prudence, a beautiful girl who speaks with a funny accent and dresses in old-fashioned clothing, he's smitten. He thinks he's found the perfect date for the dance! Prudence...

When Cody is 14, he runs away from home, leaving behind his abusive mother, and flees across the country. He doesn’t stop until he hits Texas and the Sam Houston Tiger Ranch. Under the guidance of Sunny, the ranch’s owner, he cares for the animals in ways he never imagined. He feeds them a diet...

KLATU, LEK, AND PLOO just missed their ride home to planet Loogl. The army men from Area 51 scared their spaceship away. So where can they find a place to land a spaceship without causing havoc? Hollywood, of course, on the stage set of a film crew! But when they get there, the three kids are roped...

Uh-oh! Thanks to a heaping helping of a new dietetic sugar substitute, Zack shrinks down to the size of a bug. It's not all that bad--until he discovers an army of ants who are building an ant pyramid for their despotic pharaoh-queen!