Flirting with danger

Nancy and Ned head to Southern California to visit friends, but their trip takes a turn when Rachel, a younger sister, vanishes after her high school graduation. Nancy discovers Rachel has become involved in a dangerous, high-society LA scene. As Nancy investigates, she uncovers a string of burglaries and a secret society called the Kats, who warn her to stay away. Nancy must uncover the truth behind the Kat clique before Rachel gets into deeper trouble.