4 books in series
Threshold
Threshold is a 6-book series with 4 released primary works first released in 2012 with contributions by Christa Kinde and Peter Clines.
| #0.5 |  Angels All Around
| 0 | 0 reads | ||
| #1 |  14
| 3.83 | 170 reads | ||
| #2 |  The Fold
| 3.82 | 196 reads | ||
| #3 |  Dead Moon Dead Moon
| 3.56 | 8 reads | ||
| #3.5 |  Angels in Harmony Angels in Harmony
| 0 | 0 reads | ||
| #4 |  Terminus
| 3.85 | 43 reads |