Diana Marik
The Seven Deadly Veils
Vampire Series
Book 1: Veil of Shadows
Book 2: Veil of Mists
Book 3: Veil of Darkness
Book 4: Veil of Secrets  
Book 5: Veil of Destiny
Book 6: Veil of Honor
Book 7: Veil of Light

The Seven Deadly Veils Vampire Series

Check links for the first few chapters of Book 1 of Veil of Shadows, Book 2 Veil of Mists, Book 3 Veil of Darkness and the Novella, The Blue Veil.