The series and the author has a lot of potential. I expect to see some serious growth in the next few books and I hope the author goes back and rewrites Hell's Knights for its betterment. I had a few issues with the book, which I will explain, and then I will give a short review. 
 Possessive use in placement of plural usage. Several instances of the plural of Harley Davidson(s)written as Harley Davidson's. This was an issue many times over, not just on the branding of motorcycles. This is a rookie mistake that I hope to see the author grow out of. A lot of misplaced words, misspelled words, the use of I instead of Me(this is something many do, believing I is the proper use even when it is not), and improper overuse of commas that I believe will be found on a re-edit. I'm not putting the author down by any means; I've been there. The more you write the more the rules of grammar and punctuation solidify in your mind and you use them without thought. Bella Jewel has a lot of potential as a story teller, and time will tell on her growth as her own editor. Whether you have an editor or not, it's the writer's responsibility to self-edit to grow in their craft. Another issue for me was about 1/3-1/2 way point where the character of Addison began to act out of character. Another rookie mistake that is easy to overcome. 
 Mix of a review and my thoughts. I may be reading but my mind is always in edit-mode; not to put down the novel but to improve the novel. 
 Hell's Knights starts out gritty, dark, and hopeless. The backstory was more so intriguing than the current time frame. Written in past and present sections, with the past more passages than actual scenes. More unsolicited advice: expand the past sections of the novel; it's the backbone of the storyline. 
 I was looking for a read that would trap me, hold me hostage in the storyline, and not let me go until the end, and Hell's Knights did that for me. I also immediately wanted to read the next in the series. But since it was 3 a.m. I decided to get some rest so I could spend the day reading with a clear, non-zombiefied mind. 
 Bella Jewel didn't wimp out like other authors usually do. Scenes were brutal, vivid, and I felt pained reading them. 
 I'm an endearment hater, but even I was charmed by Cade's Sugar and even his constant bombardment ofshut the fuck up. Why? Because only Cade used the words- he owned them. Except around the 30% mark where Babe was used and I almost threw my paperwhite. That lazy replacement word is on my shitlist. Not sure why we had 6 Babes instead of sugar, and one from Addison said in a snide, 'knock that shit out' manner(thank goodness). That is something a good edit/rewrite would pick up. 
 The story pacing was a nice speed; not too fast or too slow. The description was adequate, this coming from someone who doesn't need every action, piece of clothing, and space described in great detail, so I thoroughly appreciated the lack. 
 One more, or two, piece(s)of unsolicited advice: Addison running off, acting naive and bullheaded, is completely out of character judging by her past. She is street smart. Addison knows Hell is coming for her. She wouldn't pull that bratty princess bullshit. That needs resolved. It makes Addison look mentally challenge and is one of the biggest beefs by all readers; making women look like irresponsible, irrational, hormonal idiots that don't use the brain in their pretty heads. The epilogue also needed expanded as well with the sex scene at odds with the scene itself. It felt... out of place. 
 I know this review sounds negative, pushy, and insulting. Actually, that is as far from the truth as possible. I give Bella Jewel mad props, and I see a huge potential in the writer and the series. With a little bit of work this could be a 5+ star read, and I loved the premise, the characters, and the series enough to want to see it succeed, not just in sales but in the story and editing as well.