Overall, I found Angel’s Devil entertaining. It is very much genre fiction, and I think it fits its niche pretty well. If you like crime stories, relationship drama, damaged protagonists, and that older-school version of masculinity where a competent man has lost his footing and needs to prove something mainly to himself, then I think this book is worth checking out.
For me, the book works best as a redemption drama wrapped in a crime story. Jake Brand is the center of the novel, and the strongest parts are watching him spiral, confront himself, and try to come out the other side as someone more stable and self-aware.
The world has texture, the Portland setting feels vivid, and the story has enough familiar genre elements to keep the story progressing even when Jake's rumination takes over.
Where I wanted more was in the side characters, the murder investigation, and the final turn. I think the book had room for more depth, more buildup, and more time on the page given to the investigation into the murder. That would have made the crime label feel more earned. But even with those reservations, I can see what the author was going for, and I think the novel succeeds in giving readers a wounded, hard-drinking, morally struggling protagonist who attempts to claw his way back toward himself.
Ultimately Angel's Devil is readable and entertaining. Readers interested in crime drama with a strong redemption arc will probably like it.