Wings in the Night series

Back Cover Copy: Before she joined Reaper in hunting Gregor's gang of rogue bloodsuckers, privileged princess Topaz was gunning for just one vamp: Jack Heart. The gorgeous con man had charmed his way into her bed, her heart and her bank account, taking her for half a million dollars and vanishing without a word.

From the back: Even by vampire standards, Reaper is a loner, and his current mission to distroy a gang of rogue bloodsuckers is definitely a one-vamp job.