Lover unleashed : a novel of the Black Dagger Brotherhood / J. R. Ward.

"Payne, twin sister of Vishous, is cut from the same dark warrior cloth as her brother. Because she is a fighter by nature, and a maverick when it comes to the traditional role of Chosen females, there is no place for her on the Far Side...and no role for her on the front lines of the war, either. When she suffers a paralyzing injury, human surgeon Dr. Manuel Manello is called in to treat her as only he can--and he soon gets sucked into her dangerous secret world. Although he never before believed in things that go bump in the night--like vampires--he finds himself more than willing to be seduced by the powerful female who marks both his body and his soul. As the two find so much more than an erotic connection, the human and vampire worlds collide...just as a centuries-old score catches up with Payne and puts both her love and her life in deadly jeopardy"--