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Mission Hindenburg is the second book in the Doublecross series. It was written by C. Alexander London.

Official Synopsis

FREE FALL

The Cahills are the world's most powerful family, but their strength is being tested. A sinister man calling himself The Outcast has targeted the family and set them an impossible test. He's recreating four of history's worst disasters and challenging the young Cahills to find and stop the tragedies before it's too late. Now, with one disaster behind them, siblings Dan and Amy Cahill and their friends have just days to discover what the Outcast's next move will be.

Their frantic search seems to be pointing toward a terrifying air disaster, the explosion of the Hindenburg airship. But no one travels by airship anymore -- what do the Outcast's cryptic messages mean? The young Cahills must split up and take to the skies to try to find the answer . . . before their whole world comes crashing down.

Trivia

  • The second book in The 39 Clues series to feature a sky transportation vehicle on the cover, the first being In too Deep.

Puzzles

  • Book Cover Puzzle - (Pigpen Cipher) -​ House of Orange
  • Blimp Page Puzzle - (Pigpen Cipher) - hope is the answer
  • 39+ Pages Puzzle - (Caesar Shift) - til death do us part

Cards

The following cards will only be available as digital cards:

code:W9NPF2FXR9

Artwork

Mission Hindenberg - artwork


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