That's what I call a Monkey Mystery! When a mysterious crossword puzzle offers mystery, treasure, and a free trip to Peru, Nancy and the gang know what to do. Summoning all the bravery it takes to go back to the hotel room alone, George, Bess, and Nancy face off against the criminal known as "El Gato" at every turn. Can Nancy solve the mystery of reading small words before El Gato pretends to be an authority figure for a third time? Or will the treasure of the one friendly conquistador never be returned to whoever it belongs to? Join us as we ask- Could the pictures in the Nascan Lines look smaller if they were further away?

When a recurring dream about 99 steps plagues local French transplant Josette Blair, there's no one to call but a teen detective! Counting the steps of every staircase she uses, Nancy sees the sites in France. Trouble follows her though, in the form of one forging, blackmailing, long armed twin. Will the secrets of alchemists of the past lead to an answer today? Or will a man dress as an Arab scare a financier into ruining the world economy? Join us as we follow a decades old mystery that has scarred a woman for life!

When Nancy and the gang find themselves without a hotel room, who swoops in to save the day but Ned! Offered lodging at the mansion of an older single man who likes to spend time with college students, all Nancy has to worry about now is a second adult man wandering around the mansion and looking through her things while she sleeps! What further perils will Ned Nickerson put these girls through? Kidnapping? Yes! Racism? Yes! Historical gaslighting? You bet! Join us as we ask "How many padlocks does it take to lock a library?"