A series of young adult Paranormal Romance novels by Stephenie Meyer, and the title of the first book. It is about a girl named Bella Swan (cough, Mary Sue, cough) who falls in love with Edward Cullen, a vampire. Bella is - for some reason - a really special girl, and Edward is (a) unable to use his vampire powers to read her mind, (b) totally hot for her blood and (c) madly in love with her. So, Edward wants to form a relationship with Bella while resisting the urge to suck her dry. Things get complicated in the second book when Bella's childhood friend Jacob, who also has the hots for her, reveals himself to be a shirtless werewolf. There's also the occasional Wacky Wayside Tribe, such as the vampire tracker James and the Volturi.