Lover's Knot (Dorina Basarab, #3.5)

One of the most powerful vampires in existence has gone missing, which is fine with Dorina Basarab. As a dhampir, a half human, half vampire hybrid, her job is killing vampires, not saving them. But then the man sent to find the missing vampire also goes missing, and he happens to be her lover, Louis-Cesare. She therefore finds herself on a rescue mission with an old enemy, while a flood of long forgotten memories plays out in her head. What are they trying to tell her? And can she figure it out before it's too late?