Before Dawn — Ann Bruce

Mercy Jansen dreams of erotic interludes with a man whose face she never sees--and she always awakens before the scraping of sharp teeth along her skin turns into something more dangerous.

Even while she questions her subconscious mind, a mundane event sets her on a collision course with a man who makes her knees go weak--and proceeds to turn her preconceived notions of reality upside-down and inside-out by pulling her into a shadowy, violent world where her dreams threaten to become an all-too-real nightmare.