- The Gecko and Sticky, by Wendelin Van Draanen ; illustrations by Stephen Gilpin
- Flipped, Wendelin Van Draanen
- Sammy Keyes and the hotel thief, by Wendelin Van Draanen
- The peach rebellion, Wendelin Van Draanen
- The Gecko & Sticky, sinister substitute, Wendelin Van Draanen ; illustrated by Stephen Gilpin
- Sammy Keyes and the art of deception, Wendelin Van Draanen
- The Gecko & Sticky, the power potion, Wendelin Van Draanen ; illustrated by Stephen Gilpin
- Sammy Keyes and the skeleton man, by Wendelin Van Draanen
- Sammy Keyes and the search for Snake Eyes, by Wendelin Van Draanen
- Secret identity, by Wendelin Van Draanen ; illustrated by Brian Biggs
- Sammy Keyes and the runaway elf, by Wendelin Van Draanen
- Van Draanen, Wendelin, Gecko & Sticky, 2
- The Gecko & Sticky, the greatest power, Wendelin Van Draanen ; illustrated by Stephen Gilpin
- Sammy Keyes and the curse of Moustache Mary, by Wendelin Van Draanen
- The Gecko & Sticky, sinister substitute, Wendelin Van Draanen ; illustrated by Stephen Gilpin
- The Gecko and Sticky, [the greatest power], by Wendelin Van Draanen
- Sammy Keyes and the psycho Kitty Queen, by Wendelin Van Draanen ; [illustrations by Dan Yaccarino]
- Van Draanen, Wendelin, Gecko & Sticky, 3
- Van Draanen, Wendelin, Shredderman, 3
- Van Draanen, Wendelin, Gecko & Sticky, 4
- Sammy Keyes and the psycho Kitty Queen, by Wendelin Van Draanen
- Sammy Keyes and the dead giveaway, by Wendelin Van Draanen
- Van Draanen, Wendelin, Shredderman, 4
- Meet The Gecko, by Wendelin Van Draanen ; illustrated by Brian Biggs
- Van Draanen, Wendelin, Shredderman, 1
- Van Draanen, Wendelin, Sammy Keyes mysteries
- Sammy Keyes and the Sisters of Mercy, by Wendelin Van Draanen
- Van Draanen, Wendelin, Gecko & Sticky
- The Gecko & Sticky, Villain's lair, Wendelin Van Draanen ; illustrated by Stephen Gilpin
- Enemy spy, by Wendelin Van Draanen ; illustrated by Brian Biggs