| # | Book Title | Author | |
|---|---|---|---|
| 1 | Agatha Heterodyne and the Beetleburg Clank | Foglio, Phil | |
| 2 | Agatha Heterodyne and the Airship City | Foglio, Phil | |
| 3 | Agatha Heterodyne and the Monster Engine | Foglio, Phil | |
| 4 | Agatha Heterodyne and the Circus Of Dreams | Foglio, Phil | |
| 5 | Agatha Heterodyne and the Clockwork Princess | Foglio, Phil | |
| 6 | Agatha Heterodyne and the Golden Trilobite | Foglio, Phil | |
| 7 | Agatha Heterodyne and the Voice of the Castle | Foglio, Phil | |
| 8 | Agatha Heterodyne and the Chapel of Bones | Foglio, Phil | |
| 9 | Agatha Heterodyne and the Heirs of the Storm | Foglio, Phil | |
| 10 | Agatha Heterodyne and the Guardian Muse | Foglio, Phil | |
| 11 | Agatha Heterodyne and the Hammerless Bell | Foglio, Phil | |
| 12 | Agatha Heterodyne and the Siege of Mechanicsburg | Foglio, Phil | |
| 13 | Agatha Heterodyne and the Sleeping City | Foglio, Phil |