Sam Knox must use her archaeological skills and her knowledge of ciphers to crack the code of a mysterious diary and outsmart a nefarious brotherhood seeking to activate the curse of the Specter Queen.

After twelve-year-old Addison Cooke's uncle unearths ancient Incan secrets in Peru, he is kidnapped by a shadowy organization intent on stealing the treasure unless Addison and his friends can decipher the clues first.

"In the global race for space domination, a cryptologist must overcome his greatest mistake to help the granddaughter of a nuclear physicist decipher the clues to a top secret nuclear project before it falls into the hands of America's enemies"--

"Summer is coming to a close on the East End of Long Island, and Alex is no longer welcome. A misstep at a dinner party, and the older man she's been staying with dismisses her with a ride to the train station and a ticket back to the city. With few resources and a waterlogged phone, but gifted with an ability to navigate the desires of others, Alex stays on Long Island and drifts like a ghost through the hedged lanes, gated driveways, and sun-blasted...

Unexpected media attention in their Harlem neighborhood bring Shelby Holmes, nine, and John Watson, eleven, a new case that sends them undercover as figure skaters.