I would throw in the sequel "Head on". Same universe - just some time later. The audiobook is also narrated by Wil Wheaton. And it is great as always. Offtopic

I would throw in the sequel "Head on". Same universe - just some time later. The audiobook is also narrated by Wil Wheaton. And it is great as always. Offtopic. I would blindly recommend all books in the combination Wheaton narrating Scalzi. But esp. "The Collapsing Empire" (I can't wait for the next part to be released in October).