Note: There are other series with the same name: Threshold (Christi J. Whitney)
- Series: Threshold (Janet and Chris Morris) Series Record # 27644
- Series Tags: science fiction (1)
- Threshold (Janet and Chris Morris)
- 1 Threshold (1990) by Chris Morris and Janet Morris
- 2 Trust Territory (1992) by Chris Morris and Janet Morris
- 3 The Stalk (1994) by Chris Morris and Janet Morris