Recently I read Orphan X by Gregg Hurwitz. Here's a link....
https://www.goodreads.com/book/show/40874079-orphan-x
I wanted something different to my usual Sci-Fi and Fantasy and this is a completely new genre for me.
I liked the premise, sort of reminded me a bit of the Jason Bourne movies. Secret agent, highly skilled, totally deniable, black ops, and all that jazz. Unfortunately, I thought it started out well and then rapidly went downhill.
So I'm after suggestions of something similar but, well, good.