Xenos (The Eisenhorn Trilogy, Book 1)
Introduces Gregor Eisenhorn in the first book of a trilogy.Eisenhorn is an Inquisitor, and the book starts with him tracking down a cultist, which later turns out to have more far reaching consequences.
A great cast of characters and plenty of action.
Abnett tends to do good 40K novels, but this series is one of his best.
 - Dan Abnett)
