The Twilight series's is a young adult vampire romance series, the first book of which is called Twilight.
Twilight ( stylized as twilight ) ( 2005 ) is a young adult vampire-romance novel by author Stephenie Meyer . It is the first book in the Twilight series , and introduces seventeen-year-old Isabella `` Bella '' Swan , who moves from Phoenix , Arizona to Forks , Washington . Twilight (novel series) . Since the release of the first novel , Twilight , in 2005 , the books have gained immense popularity and commercial success around the world .