| title | ISBN-13 | year of publication |
|---|---|---|
| The Beach Buoy | 978-0-00-732616-7 | 2010 |
| The Dog's Dinner | 978-0-00-731096-8 | 2009 |
| The Elephant’s Trump | 978-0-00-731095-1 | 2009 |
| The Nit Picker | 978-0-00-732617-4 | 2010 |
| The Sewers Crisis | 978-0-00-731097-5 | 2009 |
| The Verruca Bazooka | 978-0-00-731094-4 | 2009 |