Original Sin. The Order of Vampires, #1

?????????? #1 Bestseller in Vampire Thrillers! Bestselling and award-winning author Lydia Michaels has created an earth-shattering world of excitement where passion and emotion collide in an explosive clash of secret fantasy lore and contemporary life-or-death suspense as immortals fight to find their destined mates before it's too late!Adam Hartzler has always been an honorable immortal, but the fine line between right and wrong blurs when he is called to his fated mate.
If he does not find and claim her soon, he will lose his soul and humanity forever, transforming into a vile predator controlled by insatiable bloodlust. Adam's salvation relies on one mortal's surrender. Will he find her in time, or will he fail and be sentenced to a tortured eternity as a vampire? Time's slipping away, and so is Adam's control. Passion and emotion collide in an explosive meeting of destined souls that begins with a ruthless betrayal when Adam unapologetically takes what is his.