The strange disappearance of a young Turkish client of Mr. Drew’s and the gift of an Oriental rug with a coded message woven into its decorative border start Nancy on a difficult search for a missing mannequin. What happened to the attractive figure that Farouk Tahmasp used in the display window of this rug shop? Who is trying to keep Nancy from finding it – and why? Tracking down the intricate trail of clues takes Nancy and her friends Bess and George, Ned, Burt, and Dave to Turkey. Their sleuthing leads them to the Grand Bazaar in the exotic city of Istanbul, where Bess mysteriously disappears. Suspense mounts when Nancy encounters a vengeful enemy at an ancient underground reservoir. Events move swiftly as Nancy and her friends try to solve this challenging mystery!

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.

Kitty and Johnny Blair, two famous actors, adopt baby twins who were mysteriously found in a boat along the river. The cruel Blairs have only adopted the babies as a publicity stunt, as they hope to raise the children as actors, which will help their own careers. Nancy sets off to find their real mother and take them away from the Blairs.

A fiery glowing eye in a museum, the abduction of Ned, the code name Cyclops, and a pilotless helicopter draw Nancy and her friends into a dangerous investigation.

The Hidden Window Mystery: Nancy and her friends, Bess and George travel to Charlottesville, Virginia in search for a missing stain-glass window.

Asked to locate a stolen necklace of unusual value, Nancy soon discovers that strange and dangerous people are responsible for the theft.