Sigma Force · Book 10
Tracker
- Published
- 1 January 2012
- Pages
- 74
- ISBN-13
- 9780062233929
- Type
- short

About this book
"Tracker" is one of the digital-only Sigma Force short stories James Rollins published between numbered novels, sitting between "The Devil Colony" and "Bloodline" in 2012 — an optional character vignette for series readers rather than one of the eighteen novels that carry the main plot.
Its place in Sigma Force
Tracker is book 10 in the Sigma Force series. It follows The Devil Colony. It is followed by Bloodline. See the full Sigma Force reading order.
Sigma Force is a covert unit of the U.S. Defense Advanced Research Projects Agency (DARPA), staffed by former special-forces operatives cross-trained as scientists and sent to investigate threats where cutting-edge science and ancient mystery collide. Every novel pairs a real scientific or historical hook — CRISPR gene editing, quantum physics, lost expeditions, ancient plagues, cryptozoology, Norse and biblical lore — with a globe-spanning conspiracy, and James Rollins (a veterinarian by training) grounds even…
Editions
- edition · unknown publisher · — · ISBN 9780062233929