This is book one of four...and to reach full conclusion you must read all four.
I did find the subject based on authors into to be intriguing, having studied human trafficking, and expected somethings different from the book.
Just based on the information in book one, much indeed was repetitious without great success of tying that repetition to current or upcoming story. Further, knowing what I do now, I feel I could almost skip to the last book just to find out if and how the dream of freedom is resolved.
As an avid reader, I believe this storyline could have been improved by taking the four books, and not concentrating the goals of all the books into book one.
Book one should have concentrated on the entire street trade in human trafficking subject, in depth, dwelling a bit more on the broad range and variety of trafficking, running through the life and death of those not strong, or too strong, both in transport and activity, gradually introducing the storyline character of Phoenix. More of her personal life, interests (business, finance, decorating) could have been dwelled upon, tying in her experience at her family's business. Some logical tie between losing her mother, her brother going to school (and protecting her from what?), and her father's sudden turn on her ... as a maturing female, who cares that she is his daughter (she is, isn't she?)bringing his purchase into the forefront. Moving from Phoenix tho Antoine and the start of their relationship could have filled an entire volume.
The current Volume four, "the conclusion", could have shown a broad sweeping elaboration of how well Reve was doing, including dwelling on how upgrades had helped the business grow even more, but incorporating information from the human trafficking aspect again...how Reve got where it did because of that environment, tie the end to the start.
Meanwhile, the end should tie up the lose ends of the "hostages" uniting to find their "window of opportunity", true freedom, and if they are able to bring down the entire business to the ground, all the better.
That leaves books two and three ... or the subject matter between the start and the conclusion. Part two should have focused on the torture of the months leading up to Phoenix's submission...it didn't happen overnight but in some ways the cavalier way it is referred to makes what she went through sound not so bad that she flipped attitudes so completely and with no further ado, working alongside as well as over, under, and astride her new owner. After well developed attitude adjustment is in place and firmly established the next phase should have concentrated on the additional workforce.
Here is where developing each character through their private thoughts and habits when not working would be valuable, showing the reader a human side of each. Dwelling on their past, their present, and future dreams. Then the appropriate follow-up would be gradually more singular interface with Phoenix, more group discussions among the "whores", more outings with Phoenix, such as those to the bank, to lunch and shopping.
While this is a very difficult subject to write about, if it is undertaken it should be given its due with deliberate depth and startling revelation...making the reader squirm or gasp....feel the emotion and mentally acknowledge that they know nothing of this kind of pain, but now believe. Or it should be told as a story, with a start, storyline and a conclusion all in one book. Based on the content of this book, I would have preferred the latter.