The three first books in the Series are highly entertaining and captivating. The first book is a great introduction to the Series. Marcus is handsome, and sweet. Him and Elle are a perfect match. The second book is a good continuation of this entertaining Series. Cruz is such a wonderful character! Charming, sexy, and caring. He made an awesome couple with Santha. Finally, the third book is really interesting with complex and intriguing characters. Gabe is enigmatic, strong, and caring. Emerson and Cruz are perfect together. I like these stories with alpha protective men, and smart and strong women. The transition between each stories is well done. The world building is intricate, and captivating. Each story is interconnected with an ongoing plot. I liked the characters, the brotherhood, the action, and the adventure. Jeffey Kafer and Samantha Cook did a great job with the narration. I liked their voices together. This is a great Sci-Fi Romance, and I enjoyed it. Now, I am looking forward to listening to the fourth book in the Series.