In the course of solving the mystery of an old man's disappearing fortune, Nancy both starts and ends a family feud and reveals the identity of an orphan of unknown parentage. The Sign of the Twisted Candles is the ninth volume in the Nancy Drew Mystery Stories series. As the second volume written by Walter Karig, it was originally published in 1933 under the pseudonym Carolyn Keene.

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 as diplomacy to save it.Nancy braves one danger after another to bring to justice the swindlers who are stealing Asa Sidney’s fortune. With only the sign of the twisted candles to guide her, Nancy uncovers hidden treasure and an amazing letter that ends a family feud and brings unexpected happiness to Carol.

Nancy must figure out the connection between a mysterious diary and a suspicious house fire.

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 that appears after dark in the woods outside their home at lonely Sylvan Lake. When Nancy discovers the significance of the eerie signal, she also learns that her two mysteries are connected.

When Nancy receives a letter informing her she’s heir to a fortune, she decides to track down the sender, as well as the other Nancy Drew.

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 dognapping—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 for publicity? One of Lacey’s superfans? Or maybe it’s Paige Samuels, owner of the bookstore that burned. Nancy, Bess, and George will have to read between the lines as they dig deep into a dangerous mystery.

Snowy situation! Nancy, George, and Bess are on a ski trip! They are having tons of fun, and Bess proves a natural for the slopes. She even wins a special award! But when the ski supply room is suddenly trashed, all eyes turn to Bess. It looks like she's a suspect this time around. Nancy is sure Bess is innocent, but how can she prove it? And just when it seems things can't get any worse, a snowstorm closes the road home. The Clue Crew is trapped at the ski lodge! Can Nancy find a way to clear Bess's name...and will they ever get home?

Nancy takes her best friends, George and Bess, to the new spa in town. However, weird things keep happening that may drive business away, and Nancy is determined to find out who's responsible.

Nancy becomes involved in a double mystery concerning a haunted bridge and jewel thieves.

When food for Thanksgiving starts disappearing from homes in River Heights, Nancy, Bess, and George investigate.