I thought this was an excellent piece of S-F erotica/romance. Bachar plunges you right into the action of the story as the main character, Talena, has her life completely upended in a matter of minutes by Dack, an undercover freedom fighter (I do not feel this is a spoiler as this information is revealed fairly early on in the narrative). Talena, a member of an alien race called the Cy'ren, is deep in the throes of her Phase--a variety of estrus female Cy'ren experience that serves the dual purpose of providing early conflict in the story and providing Bachar with a neat narrative device to get to the "good stuff" early on. The best part of this is that female Cy'ren remain in Phase until they mate enough times to satisfy their biological drives--and Talena has not seen another Cy'ren for a long, long time. The chaos that ensues as Dack takes her to the ship where he serves--and which houses a few other male Cy'ren--is by turns engrossing, dangerous, sexy, and thoroughly satisfying on many levels.
What makes this book a standout is that Bachar does not content herself with a mere sexual potboiler here. There's some good meat on the bones of this story. Besides the abovementioned biological imperative to mate that drives the--well, the drives of the various characters-- there is also an unexpected and compelling love triangle, a great deal of political intrigue that wouldn't be out of place in a Frank Herbert novel, and some very well-described-and-paced action to keep it all moving. And of course, there's the sex. Bachar doesn't oversaturate the novel with it, but there is no mistaking what you're reading for anything other than erotica when things start to heat up between the characters. And Bachar makes sure to keep the heat on once she applies it: the sex scenes are very smartly written, and very vivid as well. As a testament to her skill I will say that I was standing up on a train while reading some of the early chapters, and I, uh, had to stop reading and play a game on my phone for a bit. So, there's that.
None of this would be worth a damn to me if the characters didn't make the book worthwhile . . . and here Bachar shines. From Talena to Dack to Dack's captain, Carmen, to the dangerous rogue Cy'ren Jace, the characters are crisply defined and well-thought-out. They have believable motives and conflicts with each other, and interact with one another in a believable fashion. Jace and Dack especially have some wonderfully funny moments together, and later on Jace actually threatens to steal the book from the two leads.
I don't normally go in for romance or erotica, but I will occasionally broaden my interests for the sake of a good read, and I'm pleased to say that I got just what I was looking for with Robyn Bachar's book. It's a definite winner.