Book 1

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!

Book 2

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?

Book 3

A Ghost Named Wanda

by Dan Greenburg

Published 1 August 1996
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.

Book 4

Zap! I'm a Mind Reader

by Dan Greenburg

Published 1 August 1996
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!

Book 5

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 Silver has been replaced by the fang- toothed Dr.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!

Book 6

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?!

Book 7

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.

Book 7


Book 8

My Son, the Time Traveler

by Dan Greenburg

Published 1 April 1997
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.

Book 9

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?

Book 10

Bozo the Clone

by Dan Greenburg

Published 1 August 1997
"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!

Book 11

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 here! Could it be genuine animal communication? And can Zack and his new friends get their signals straight and salvage an old sunken ship filled with treasure?

Book 12

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?

Book 13

Misfortune Cookie

by Dan Greenburg

Published 1 September 1998

Book 13

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?

Book 14

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!

Book 14

Elvis, the Turnip, and Me

by Dan Greenburg

Published 1 November 1998

Book 14

Elvis the Turnip...and Me

by Dan Greenburg

Published 9 November 1998

Book 15


Book 15

Hang a Left at Venus

by Dan Greenburg

Published 1 July 1999
When Zack and his dad come upon an alien whose spacecraft is running on empty in Central Park, it's easy enough to find more fuel. (Mayonnaise!) But retrieving the abandoned spaceship from the NYPD is quite a different story!