White Night - Jim Butcher (2007) Roc

Wizard Harry Dresden, now a Warden, has a personal puzzle to work out; his first love has surfaced and is trying to guard a club of minor witches, with no luck. Surveillance video shows his brothe, Thomas, an emotion sucking vampire, abducting the missing women. All this and more is going on during a lull in a war between the wizards and the vampires.  And there may be a third party in the background.