Nightwatch over Windscar

Set in the universe of Rory Thorne, the second book in this sci-fi series follows unlikely allies who must discover the secrets of ancient ruins.

Iari is good at killing monsters. As a templar in the Aedis, a multi-species religious organization committed to protecting the Confederation, eliminating extra-dimensional horrors is her job. But after she helped stop separatists from sabotaging the entire Confederation, she discovered a new sort of monster: the rogue-arithmancer, political kind.

...