Blood Bathory: Like the Night. The Guardians of Gaia, #1

You can run.After losing his younger sister to cancer, fashion photographer Evan St. John tries to outrun his pain, leaving New York for the excitement of Paris. His talent and striking good looks bring him to the attention of Elizabeth Nadasdy, the elegant and powerful owner of House of Nadasdy. Evan is thrilled at the opportunity to work for such a prestigious designer, but he soon discovers Elizabeth wants more than his talent.
Beneath the beautiful mask she presents to the world lurks the evil of a vampire whose lust for beauty is surpassed only by her thirst for blood. Evan's life is shattered when Elizabeth turns him into one of her "children." Unable to bear what he has become, he flees to New York to find his best friend, police officer Will Trask. The one person who might be able to help him. But you can't hide.Together, Evan and Will find themselves drawn deeper into a strange world they never knew existed.
Standing against the vampires are the theriomorphs, shapeshifters who serve as the guardians of Gaia, the embodiment of all life on earth. Though sworn to eradicate every vampire, Marielle Du Lac, the leader of the theriomorphs, offers them a bargain. If they help bring down Elizabeth, her people will try to find a way to restore Evan to life. Caught up in an ancient war between two powerful supernatural forces, Evan and Will must choose sides, because if they are to have any chance of a future together, they must destroy Elizabeth Nadasdy before she destroys them.