Nancy and her friend Helen visit their friend Emily Willouby at the Lilac Inn, which Emily now owns, to help her plan her wedding. Emily plans on selling inherited diamonds in order to help fix up the Lilac Inn. However, Nancy soon learns that someone has been impersonating her and making expensive purchases under her name. Soon after, Emily's diamonds are stolen! Can Nancy find the thieves and recover the missing diamonds?

Another exciting mystery begins for the  young detective when her friends Bess and George ask her to investigate a rumor that their wealthy great-granduncle, Asa Sidney, is virtually a prisoner in his own mansion. But solving the mystery and befriending Carol Wipple, the sixteen-year-old foster daughter of the caretakers of the old mansion, nearly costs Nancy the friendship of Bess and George. It takes all of Nancy's sleuthing ability as well...

Nancy Drew's father is kidnapped as she investigates the case of a mysterious thief

Blue bells will be singing horses! This strange message, attached to the leg of a wounded homing pigeon, involves Nancy Drew in a dangerous mission. Somewhere an elderly woman is being held prisoner in a mansion, and  Nancy is determined to find and free her. Meanwhile, the young detective’s close friend, Helen, begs her to solve a second mystery. Helen’s grandparents, the Cornings, are frightened by a sinister wheel of blue fire...

Nancy and her friends need more than book smarts to get to the bottom of a literary mystery in this fourth book of the Nancy Drew Diaries, a new take on the classic series. A rash of crimes in a neighboring town a blazing fire at a bookstore, a boat that sinks in the harbor, and a valuable dog's dog-napping are eerily similar to the plots from famous mystery writer Lacey O'Brien's popular books. So who's behind the crimes? Could it be Lacey looking...

Nancy Drew's keen mind is tested when she searches for a missing will.

"Filled with skepticism while watching a master illusionist's performance, Nancy is dismayed when key evidence to an upcoming murder trial disappears during the magician's act. "

"Sabotage could result in a final curtain call for a ballerina's career in this eleventh book of the Nancy Drew Diaries, a fresh approach to a classic mystery series. Nancy and Bess are excited when they run into their old friend Maggie Rogers in River Heights. As little girls, Bess and Nancy were in dance classes with Maggie, until she moved away to attend a prestigious ballet academy. Now Maggie is part of a ballet company made up of the most promising...

Nancy, Bess, and George's Jiu-Jitsu class at Iron Dragon MMA takes a dark turn when they discover a threatening message at the front desk, leading Nancy to investigate whether a rival academy is to blame.

Nancy Drew investigates when a recipe for ice cream is stolen.