Dark Knights - A Vampire Tale

Eryn of Thera, an ancient vampire King who becomes immortal by ritual of blood performed millenia ago. His twin brother, Prince Erymach, destroys the temple of their powers. The king's master orders him to restore it by performing thirteen sacrifices where the victims must first build their temple, and then be sacrificed under the eclipse of the moon. Those sacrificed are known as Builders. They are believed to bestow their kind powers to rule over the humanity and even bring a soul back from the underworld in the body of the last victim.
Throughout the centuries the king has accomplished twelve sacrifices. His victims mysteriously disappeared, but in the present time he has one more to choose. He hires Richard Fox, an ambicious architect from Los Angeles offering all the riches money can buy. Richard forsakes his best friend and business partner to accept a higher position with all the perks; unbeknownst to him, he has signed the darkest contract of his life.