The Twilight series's first book was called Midnight Sun.
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 is a series of four vampire-themed fantasy romance novels by American author Stephenie Meyer .