- Series: The Silent Empire Series Record # 11590
- The Silent Empire
- 1 Dreamer (2001) by Steven Piziks [only as by Steven Harper]
- 2 Nightmare (2002) by Steven Piziks [only as by Steven Harper]
- 3 Trickster (2003) by Steven Piziks [only as by Steven Harper]
- 4 Offspring (2004) by Steven Piziks [only as by Steven Harper]