The Power Potion (The Gecko & Sticky, 4) - Tapa dura

Thirteen-year-old Dave Sanchez puts his courier job on the line when he is convinced by Sticky the gecko to open a package intended for dastardly criminal Damien Black, a decision that unleashes a Pandora's box of monstrous animals. By the author of Sinister Substitute.

Wendelin Van Draanen has been everything from a forklift driver to a high school teacher but is now enjoying life as a full-time writer. She is the author of the Shredderman quartet, the Sammy Keyes mysteries, and many other novels. You can read more about her work and watch a cool Gecko & Sticky video book trailer at wendelinvandraanen.com.

Ms. Van Draanen lives with her husband and two sons in central California. Her hobbies include the "three R's": reading, running, and rock 'n' roll.

Stephen Gilpin developed a taste for drawing strange things at an early age and hasn't looked back since. He graduated with honors from New York City's School of Visual Arts, where he had studied painting and cartooning. He currently lives in Kansas with his wife and their four children.