Book 40

Shadow of a Doubt

by Carolyn Keene

Published 1 October 1989
Nancy Drew puts her investigative acumen to the test in this thrilling installment of the Nancy Drew Files series.

Nancy Drew is on a mission to prove the innocence of a man who spent five years in jail. But things take a terrible turn when she finds him dead on her first investigative visit. Who would go to such lengths to hide the truth? Nancy is determined to find out...

Book 41

Something to Hide

by Carolyn Keene

Published 1 November 1989
Ned's marketing project for his Emerson College class-introducing Spotless beauty cream to the public at a local mall-is threatened by a mysterious individual who has laced the product with poison. It's up to Nancy to uncover the perpetrator.

Book 42

The Wrong Chemistry

by Carolyn Keene

Published 1 December 1989
The Dean of Emerson College enlists Nancy to investigate the thefts of a valuable substance being used in a top-secret experiment. But when Nancy discovers that the experiment involves biological mutations, she knows she must find the culprit before the lives of everyone on campus are endangered.

Book 43

False Impressions

by Carolyn Keene

Published 1 January 1990
A beautiful young woman in nearby Mapleton has been biking the members of a posh country club out of thousands of dollars. The extortionist's name, according to the victims, is Nancy Drew! What's worse, the con artist is a dead ringer for the teen detective.

Book 44

Scent of Danger

by Carolyn Keene

Published 1 February 1990
Nancy takes on a baffling case at the River Heights zoo. Four wild cats have vanished, and Owen Harris, a handsome grad student working on the World of Africa exhibit, is chief suspect. He appears guilty, but has he been framed? At the same time, a great perfume formula is missing, and Nancy is soon hot on the scent.

Nancy must tread carefully as she finds danger in the blacktop jungle while searching for the valuable cats and the missing formula. When Nancy walks straight into a trap, she must rely on her wits to save her skin!

Book 45

Out of Bounds

by Carolyn Keene

Published 1 January 1990
Teen detective Nancy Drew returns to call the plays when stolen cash, possible blackmail, and other shady doings at a new sports restaurant appear to be linked to steroid use among local high school football players.

Book 46

Win, Place or Die

by Carolyn Keene

Published 1 January 1990
From forgetting names and numbers to whole conversations, memory loss is an inevitable part of growing older. By age 50, you generally remember 30% less than you did at age 20. But what if there was an entirely safe, natural pill that could reduce memory loss -- and the related stress and plummeting self esteem that usually accompanies it? Luckily, now there is. Phosphatidylserine -- PS for short -- combined with a revolutionary new diet outlined step-by-step in "The Memory Cure", can dramatically improve memory retention by supplementing the brain's natural structure to keep memory capacity strong. Backed by years of clinical research, and presented in an accessible manner, "The Memory Cure" will provide solace and relief to the millions who are concerned about the health of their most vital resource -- their memory.

Book 47

Flirting with Danger

by Carolyn Keene

Published 1 May 1990
Nancy and Ned are off to Southern California to visit Josh Kline and his younger sister, Rachel. But when Rachel disappears from her high school commencement, Nancy learns that the girl has graduated into a world of trouble. She's fallen into an ultra-rich, ultra-chic, ultra-dangerous LA scene.

One of the guys Rachel's been hanging out with has a taste for hot cars and a distaste for all the rules. He's a prime suspect in a wave of burglaries in the Hollywood hills, but a secret society calling itself the Kats warns Nancy off the case. Rachel's playing with fire, and Nancy knows she has to find out what makes the Kat clique tick before Josh's little sister gets burned.

Book 48

A Date with Deception

by Carolyn Keene

Published 1 June 1990
An irresistible ballet star from the Soviet Union leads Nancy on a dance with danger. But is the star a master of dance? Or of deceit?

Book 49

Portrait in Crime

by Carolyn Keene

Published 1 July 1990
Madison Avenue advertising executive Julie Gaffney has all but given up on finding a good man and a love that will last forever -- until she finds herself face-to-face with the legendary Lancelot.

Book 50

Deep Secrets

by Carolyn Keene

Published 1 August 1990
As Nancy's summer vacation in the Hamptons draws to a close, she struggles to choose between Ned, her longtime beau, and the handsome dancer Sasha, and she investigates the kidnapping of a millionaire's daughter.

Book 50


Book 51

A Model Crime

by Carolyn Keene

Published 1 January 1990
In Model Crime, the first book in the exciting new Model Mystery Trilogy, Nancy s friend Sydney is getting married, but things keep going horribly wrong at the wedding. Who would want to ruin someone s special day? In Model Menace, just as things seem to be settling down, a mysterious menace has sabotaged Sydney s reception. Can Nancy stop the troublemaker before it s too late?"

Book 52

Danger for Hire

by Carolyn Keene

Published 1 October 1990
Nancy Drew and investigative reporter Brenda Carlton compete to solve a case involving a string of local robberies, but Nancy must forget their rivalry when Brenda falls into a trap Nancy set for the thieves.

Book 53

Trail of Lies

by Carolyn Keene

Published 25 November 1993

Book 54

Cold as Ice

by Carolyn Keene

Published 1 January 1990
Nancy spends a winter weekend on campus-and finds that crime is on the curriculum.

Ned invites Nancy, Bess, and George to Emerson College's Winter Carnival for four days of nonstop skiing, skating, and sleigh riding. But a jewel heist on campus puts a big chill on the weekend, and the police believe they have their man-Rob Harper-one of Ned's best friends.

Convinced of Rob's innocence, Nancy undertakes an investigation of her own. But the action on ice proves more slippery than she expected. Someone at Emerson is out to teach Nancy a lesson and show her just how dangerous winter sports can be. When it comes to jewelry, some like it hot-and the carnival of crime is heating up fast.

Book 55

Don't Look Twice

by Carolyn Keene

Published 31 December 1939
Nancy’s in Chicago to cheer for the Emerson College basketball team—led by cocaptain Ned Nickerson—against their rivals. But she can’t believe her eyes. Has Ned saved his sickest moves for the post-game celebration? Is he really making a pass at Denise Mason, a cheerleader who bears a striking resemblance to Nancy?

The mystery takes an even more serious twist when a kidnapper, intending to abduct Denise, grabs Nancy instead! Denise’s father is the curator of a museum, and a team of art smugglers is making a play for a priceless painting. In this case of forgery and mistaken identity, Nancy discovers that deception and danger are the only rules of the game.

Book 56

Make No Mistake

by Carolyn Keene

Published 1 January 1991
When Carson Drew’s millionaire client Clayton Grove dies of a long illness, Nancy is determined to see that the wrong person doesn’t inherit his fortune.

Book 57

Into Thin Air

by Carolyn Keene

Published 1 January 1991
Famous teenage sleuth, Nancy Drew, sizes up a sky-high case of murder when she investigates a helicopter crash - with explosive results.

Book 58

Hot Pursuit

by Carolyn Keene

Published 1 April 1991
While vacationing in the Caribbean, Nancy is kidnapped and left on a deserted island to die.