So Still The Night by Kim Lenox

Marcus Helios was a member of the Shadow Guard until one reckless act changed it all. His hope for salvation lies in an ancient scroll, which is now in the possession of an enigmatic beauty named Mina, who has no intention of handing it over.

But someone else has designs on the mystery of the scrolls, and on Mark. She is Jack the Ripper's jilted bride, whose own dark secrets will challenge the powers of everyone in her reach..