Ghost in the Serpent, Ebook (Ghost Armor #1)

Readers, who have read the 28 Caina stories so far will not think twice but read this book. They will not be disappointed.
But you don't need to know them to appreciate this book. The author has managed to create a spy-story with a carakter, who started as a spy but since has risen in power and fame. But in this book he put her back to her roots without taking away anything from her.
One spoiler may be allowed:
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The book has no nasty Cliff-hanger at the end. While it is clear that other books will follow, the book is "self-contained".