I am currently reading Flesh and Steel by Guy Haley. It is a #WarHammer40k book which finally deals with the gruesome creation of servitors, the systemic inequalities which degrade & oppress the ordinary citizens of the Empire.

The set up is well done, an investigator who has an augmented arm replacement, has to work with a tech-priest as body is found & the case over laps their jurisdictions. It’s an interesting mystery & delves into parts of the #WH40k universe I’ve not read before.
https://www.blacklibrary.com/all-products/flesh-and-steel-ebook-2020.html