Ghost Exile book 7. Spoilers ahead for the earlier works.
It opens with considerable discussion, in different venues, of Caina's apparent death in the last work. And Callastas, having demanded his reward and been denied, plots. It does not help that his own survival used necromantic techniques that harm sanity.
It involves a circus performance, the problems with using a large circle in magic, an offer to the Red Huntress, Claudia's pointing out that even though a battlefield is no place for a woman about to go into labor, the whole city's about to be a battlefield, breaking into a palace to discover things, and more.