Kindle First titles for September 2017 are live.
Only two caught my eye at first glance; again, the categories are just not my everyday reads.

But I've read stuff by Andrew Mayne before and enjoyed it, so I went with

Reminder: one book may be had for free if you're a prime member, non prime member folks can get one for $1.99. All are otherwise released on October 1 and are generally available via KU and KOLL.