Having read the two previous reviews I have nothing to add. Lover Unleashed is terrific. I could not put it down and am now panting for the next in the Black Dagger Brotherhood series. I have enjoyed all the series but felt that some of the latter books were not quite as gripping as the first four. However,this is a good as it gets. If J.R. Ward had to take time off to write this book it was worth the wait.
One suggestion, read Lover Unleashed BEFORE you start "Envy" in Ward's Fallen Angels series. The main character in Envy is not only introduced in Lover Unleashed but Envy revolves around a situation which actually originates in this book. I found Envy more difficult to get into than I would have if I had read Lover Unleashed first. Not sure why they did not reverse the order of publication but such is the publishing business.