This is mostly done without the benefit of any dialogue. Callie stumbles in on them and in a very contrived scene, Burke passes her off as his fianc e, and Simon agrees that if he indeed marries her, then it will not be necessary to kill her. Callie has to agree and this brings a renewal of doubts and angst. So much time is spent agonizing about their respective problems, that it leaves little space for plot development. Instead of characters slowly acquiring knowledge, meager as it is, gradually through dialogue or action, suddenly their awareness jumps a level or two at odd times.
Dialogue is sparse, inner tension is omnipresent, and the action is limited.
This is not a good formula for character development or a credible story line. In fairness to the author, the sexual tension matches the inner tension of the characters, and if that is all you require in a novel, then it is an acceptable read. If you are into the series, then you will be merely treading water for one month.