| Title | Titolo | Year | Series |
| Lip Service | 1999 | ||
| Secrets of Our Success | 1999 | ||
| In Fidelity | 2001 | ||
| How to Publish and Promote Online | 2001 | ||
| Flesh Tones | 2002 | ||
| Sheet Music | 2003 | ||
| The Halo Effect | Ossessione perversa | 2004 | Butterfield Institute |
| The Delilah Complex | Rosso scarlatto | 2006 | Butterfield Institute |
| The Venus Fix | 2006 | Butterfield Institute | |
| Lying in Bed | L'alfabeto dei sensi | 2006 | |
| Scared of the Sex Therapist | 2006 | ||
| The Reincarnationist | 2007 |