I just haven't gone back to the series. I have several little-known writers I'm reading now. Sci-fi stuff. Pretty darn good. One is Sara King. I've read her Zero series (Forging Zero, Zero Recall, Zero's Return, and another related short story called The Moldy Dead). They're great stories. Excellent character development.
If you like SciFi, give “Macroscope” by Piers Anthony a look. It’s an oldie but a goodie.
ps, One Shot is one of the later books in the series.