Most Popular Books by Carolyn Keene

When Nancy's best friends Bess and George have a falling out because Bess's locket was stolen from George's bag, Nancy is determined to find the thief and restore their friendship.

Nancy, Bess, and George are going skiing. But the whole weekend is getting crazy. First some bratty boys play catch with Bess's hat. Then George's lucky necklace disappears! Not only that, but someone's getting very pushy on the mountain. It's up to Nancy to find out who's playing all the dirty tricks. Because someone's turning the snow fun into no fun at all!

Chickens on the loose! Spring has sprung in River Heights! Nancy's class is hatching chickens to celebrate. Some of Nancy's classmates are excited, especially Tommy Maron. Tommy has even named all the eggs! But other classmates are less thrilled about the arrival of the little birds. Catherine Spangler is peeved because the chicks are due to arrive on HER birthday -- the nerve! But when the chicks vanish from the classroom, everyone is upset. Who would steal helpless chick eggs? Nancy knows she has a real egg of a mystery to crack this time!

AMERICA'S HOTTEST TEEN DETECTIVES TEAM UP IN A SPLIT-SECOND RACE WITH TERROR An urgent message draws NANCY DREW and her friends to the International Championship Games in California. It seems a mysterious figure called the Black Knight wants to force star athletes off the track and into the hospital. But when Nancy starts to dig for clues, the young sleuth finds she is a moving target in a high-risk event--where any mistake is fatal. Meanwhile... The HARDY BOYS show up at the games to help beef up security--and uncover a scandal. Along with acts of sabotage, there's evidence of illegal steroid use by certain athletes. But Frank and Joe's most critical problem is the Black Knight. The murderous phantom is about to deal a deathblow the competition. And the brother detectives are top picks for the all-victim squad...

AMERICA'S HOTTEST TEEN DETECTIVES TEAM UP IN A SPLIT-SECOND RACE WITH TERROR An urgent message draws NANCY DREW and her friends to the International Championship Games in California. It seems a mysterious figure called the Black Knight wants to force star athletes off the track and into the hospital. But when Nancy starts to dig for clues, the young sleuth finds she is a moving target in a high-risk event--where any mistake is fatal. Meanwhile... The HARDY BOYS show up at the games to help beef up security--and uncover a scandal. Along with acts of sabotage, there's evidence of illegal steroid use by certain athletes. But Frank and Joe's most critical problem is the Black Knight. The murderous phantom is about to deal a deathblow the competition. And the brother detectives are top picks for the all-victim squad...