There are 2 books in the Thieves of Fate series. The newest book is The Fall which came out in 2019.

1
The Nine

Book cover of The Nine
In the dark streets of Corma exists a book that writes itself, a book that some would kill for... Black market courier Rowena Downshire is just trying to pay her mother’s freedom from debtor's prison when an urgent and unexpected delivery leads her face to face with a creature out…
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2
The Fall

Book cover of The Fall
An apothecary clerk and her ex-mercenary allies travel across the world to discover a computing engine that leads to secrets she wasn't meant to know--secrets that could destroy humanity. Eight months ago, Rowena Downshire was a half-starved black market courier darting through the shadows of Corma's underside. Today, she's a…