
| Order | Book | Date | Rating | |
|---|---|---|---|---|
| 1 | Dangerous Undertaking | May-2003 | 4 | |
| 2 | Grave Undertaking | May-2004 | 5 | |
| 3 | Foolish Undertaking | Mar-2006 | 5 | |
| 4 | Final Undertaking | May-2007 | 4 | |
| 5 | Fatal Undertaking | Oct-2010 | 4.5 | |
| 6 | Risky Undertaking | Nov-2014 | 4.5 | |
| 7 | Secret Undertaking | Sep-2018 | 5 |