This looks to a good start to an interesting series by Keri Arthur. This book was written and published back in 2001 by ImaJinn Books, a small publisher, and thus many talk of Full Moon Rising, released February 2006, as being her first novel. You can see the full list of Keri’s books at her website: www.keriarthur.com.
Nikki is a psychic Private Investigator who is introduced to the world of vampires because of a case she’s working regarding a missing girl. Michael is a 300 year old vampire, an ally who offers to help her track down the vampire Jasper, who’s wreaking havoc on the city and has turned the missing girl, Monica Trevgard, as a pawn in his dangerous game. But Nikki, with a past full of hurt, is afraid to trust Michael, and is even more afraid of her feelings for him, even before finding out he’s a vampire.
On her site, Keri calls this book a vampire romance, but it actually fits better into the mystery or horror genre, which is where Amazon classified it, since the romance side of things is more of a side story than the main theme.
More detail can be found at the BookCrossing journal page for this book.