I just finished The Trilisk Revolution by Michael McCloskey.
If you've been reading this series, keep going! Sometimes while reading a series of more than three, I tire of the concepts and characters and don't come back to it. Not so here. It does help that its a nice short novel, but still, tightly written and full of new turns and developments.
This one has the same tech and the same characters, but they open up their mission and take some serious risks, and of course things don't go to plan. I think you have to expect that from McCloskey at this point, and I like that.