Note: There are other series with the same name: Countdown (Daniel Parker), Countdown (Sharon K. Gilbert)
- Series: Countdown (Tom Kratman) Series Record # 28796
- Countdown (Tom Kratman)
- 1 The Liberators (2011) by Tom Kratman
- 2 M Day (2011) by Tom Kratman
- 3 H Hour (2012) by Tom Kratman