Dan Greenburg

Zack feels that a supernatural force is at work in his apartment when he encounters floating television sets, pancakes that flip by themselves, and a ghost named Wanda.

When Zack is trapped overnight in a museum of natural history, he discovers that the Neanderthals and other exhibits come to life.

After she eats his homework, ten-year-old Zack suspects that his substitute teacher Mrs. Wolfowitz is a werewolf and uncovers her bizarre secret.

After Zack opens his medicine cabinet one morning and sees a boy who could be his double staring back at him, he enters a parallel universe.

How would you face zombies, pirates, and trolls on the way to school? Quick thinking and a sense of humor help Danny face one problem after another, but dealing with his teacher is something else entirely!

Late one night when ten-year-old Zack hears strains of "Heartbreak Hotel" coming from the refrigerator, he discovers the possibility that Elvis lives on as a turnip.

When magic enables Zack's eighty-eight-year-old grandmother to become a terrific batter, she ends up playing in a Chicago White Sox baseball game.

A few days before his school's Halloween dance, Zack meets a girl who seems to be already wearing her costume.

When siblings Klatu, Lek, and Ploo from the planet Loogl return to the mysterious Area 51 to recover their wrecked spaceship, they meet the Great Ones--four legendary Looglings who crashed in Roswell fifty years earlier.

After hearing stories that a Bigfoot-like monster is haunting Camp Weno-wanna-getta-wedgee, ten-year-old Zack begins to find evidence that the legend may be true.