Stalk, Don't Run — Carolyn Keene

After an unforgettable vacation on the exclusive beaches of California, Nancy, Bess, and George are glad to be back in down-to-earth River Heights. But just as they're settling into a boring summer routine, Malibu excitement follows them home: the superstar Casabian Sisters show up, convinced River Heights is the perfect setting for their newest reality show. And where the Casbians go, drama -- and now danger -- is never far behind. Quiet River Heights and nearby Camp Athena is turned upside down with a terrifying mix of midnight phone calls, missing Casabians, and a menacing nighttime stalker. But this isn't a reality show, this is real life -- and Nancy and her friends need to find out real fast just who is out to destroy their home... and their lives.