All Night Long (Sweet Valley High #5)
Has Jessica gone too far?Elizabeth Wakefield knows  her beautiful twin can handle almost any guy--most boys are just no  match for Jessica's seductive charms. But Scott Daniels, Jessica's  latest love, is more of a man than a boy, much older and much more  experienced than anyone Jessica's ever dated.When Jessica sneaks  off to a college beach party with Scott, Elizabeth's afraid of what  could happen. And when her twin sister isn't back by morning,  Elizabeth's fear turns to alarm. Why has she stayed out all night long?