"Shadowboxer" by Paula Sophia...
I bought it to read because I was going to meet the author, who is a local trans woman. I was expecting to be unimpressed; after all, Oklahoma is not known as a hot spot for the literary elite. And the book is a cop novel. Not even on the radar for my preferred genre.
I am continually being blown away. The prose is stark and compelling, the character (a macho police trainee, just out of the academy) is identifiable, tough, and still vulnerable. And his struggle as he learns he is transgendered is all too real, too close for comfort.
Having met the author, my suspicions are confirmed. She has blood in this story, her heart's blood was poured into it.
Highly, HIGHLY recommended.