CALLING ALL CAHILLS! Announcing a 39 Clues Superspecial adventure -- the gang is back, and called to investigate one of their own: Sinead Starling.
The first book is going to be written by the author of Mission Hindenburg - C. Alexander London. And will be released on 27 September 2016.
I guess from the temporary cover of book one the logo is back to blue, like the first series. So I guess this will have about four to five books (if they include a black logo for the Madrigals).
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steel is the answer - shattered sea
break the chains - red rising
i am the circle and the circle is me - chaos walking