EMERGENCE by C.J. Cherryh

A new review over at Tor.com:

If you’re new to the Foreigner series, this is not the place to start. (The best advice is to start at the beginning, or else at book four, Precursor.) If you’re a fan, then it’s entirely likely that you already know whether or not you want to read Emergence: it does very similar things to its predecessors—although it suffers from the absence of the aiji-dowager, whose inimitable presence has improved every book that’s featured her.