- Series: The Twins of Petaybee Series Record # 11852
- Sub-series of: Petaybee Universe
- Series Tags: fantasy (1), shapechangers (1), science fiction (1)
- The Twins of Petaybee
- 1 Changelings (2006) by Anne McCaffrey and Elizabeth Ann Scarborough
- 2 Maelstrom (2006) by Anne McCaffrey and Elizabeth Ann Scarborough
- 3 Deluge (2008) by Anne McCaffrey and Elizabeth Ann Scarborough
- Maelstrom (excerpt) (2007) [SF] by Anne McCaffrey and Elizabeth Ann Scarborough
- Deluge (excerpt) (2008) [SF] by Anne McCaffrey and Elizabeth Ann Scarborough