The Cage is the next book in series after Saber and Shadow. These books were my first introduction to S. M. Stirling (years ago) and they lead me to other of his work. I recommend his Nantucket series.

Megan and Shk'aira are headed back to Megan's homeland to bring their anger and some justice down on Habiku, who had betrayed Megan and taken over her business holdings. As they ,move closer to Habiko, he panicks and tries many ways of having them killed. It costs him everything including the support of his lover who is also the mad king's wife. Lots of fights, another good 'over the city' race, and ingenious attacks which reveal much of the culture of the country.

Along the way Megan and Shk'aira save/find/buy many of Megan's old crew, increasing their support and their responsibility. Shk'aira also attaches 2 children to their group; children who must be loved and trained and to whom the adults must model tolerance for diversity.

The major struggle is whether Megan will find peace through revenge and whether her revenge can be limited to justice or if it will reflect all the emotional anguish and physical hurt she feels.