Bella Forrest 
Origin of Vampires [EPUB ebook] 

What if the Elders were not the beginning?Amal and Amane have discovered something remarkable: the location of the protein which allows Derek to walk in the sun, even as a vampire.Along with Tristan and Esme Vaughn, the grown-up grandchildren of Anna and Kyle, Derek and Sofia set out to learn more about the world from which the protein originates — and, most importantly, its residents.On arrival, however, they encounter a new, yet mysteriously familiar species…one which may predate even the oldest vampire or Mara — and lead them to question everything they thought they knew.Welcome to Book 1 of Season 10.