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The 39 Clues Series

Ten books, four collector card packs, one game and over $100,000 in prizes. The 39 Clues is not your average book series. It’s an interactive adventure—a fierce competition for both the characters and the readers.

Read the Books

In The 39 Clues, Dan and Amy Cahill embark on the race of a lifetime. They travel from Paris to Venice to Vienna and around the world in search of the 39 clues. The trail of clues, left by their grandmother, leads to a great Cahill family power. But Dan and Amy are in danger. Five other teams—greedy descendents from the Cahill line—are hot on their trail. These power-hungry teams will stop at nothing to find the clues.


This ten book series will be authored by some of today’s best writers, including Rick Riordan (The Lightning Thief), Gordon Korman (the On The Run series) and Peter Lerangis (the Spy X series).


Collect the Cards

Each book contains six cards strapped to the inside cover. But don’t worry, you can collect more cards by purchasing the four card packs, which will be released with the first, fourth, seventh and ninth book in the series. Each card pack contains 16 cards chosen at random. So buy the packs, and collect the set!


Play the Game

Log onto the39clues.com to create an account and begin your adventure. You can start your own online card collection, find out which branch of the Cahill family you’re best suited to (Janus, Lucian, Ekaterina or Tomas), and begin your hunt for the 39 clues!


Win the Prizes

So you’re probably wondering, with over $100,000 worth of prizes, what exactly can you win? Well, it all depends on where you live. Log onto the39clues.com, click “PRIZES,” select your country and check out the list of fun contests, sweepstakes, and prizes you can win. Some countries offer cash prizes, while others offer cool stuff like gaming consoles, backpacks, lie detector watches and even a home entertainment centre!


Who Can Play?

Anyone can join The 39 Clues online, but only select countries offer the sweepstakes and contests: Australia, Canada, India, Ireland, Malaysia, New Zealand, Singapore, United Kingdom and the USA.


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  • 0 Comments

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    The fourth book in the 39 Clues series finds Dan and Amy Cahill exploring the tombs and treasures...
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    General In The Forums

    Mellisa169
    Mellisa169 posted in Random:
    My sister turns 18 in as of now 20 minutes, so she's going to be locked out. I'm kind of sad, but here's to you @Katara 9296   You will be missed. Granted, she hasn't logged in in a while, but it still kind of makes me sad.
    reply about 2 hours
    AnnaOfExquizurd
    (:P So for Hearth, I'm replacing him with Solomon Wreath from Skulduggery Pleasant . And Blitz is being replaced by Kotake from The Legend of Zelda: Ocarina of Time ... except a slightly altered version of her, more of a reincarnation, since Link and Zelda are always reincarnated versions of the two same people. XD You can do the same sort of thing with your guys if you want to change the person in some sort of little way. I'll start writing as soon as you pick your dudes out.)
    reply about 3 hours
    unicornsrule626
    (Yeah. Alrighty!!  Nooo waaay XD YAS!)
    reply about 4 hours
    AnnaOfExquizurd
    (Since it's not an RP, it's kinda pointless to make forms. We can just divvy up characters to choose, and say, for example: "Magnus is Percy Jackson from Percy Jackson and the Olympians. " If the other person doesn't know the character, they can research them a bit so they're more confident writing with them. So to make this completely random, I used a random number picker to assign characters to each of us. The randomness came up with you choosing the replacements for Magnus and Sam, and for me to do Hearth and Blitz.)
    reply about 4 hours
    unicornsrule626
    "AnnaOfExquizurd" wrote: (Nice! So we're doing  Magnus Chase and the Gods of Asgard ? And, it'd be more fun to write this with fictional characters from other universes. If we were doing  The Sword of Summer , here's the people we would likely replace with some of those swapped dudes: Magnus Blitz Hearthstone Samirah Yeah? And since this would be considered a roleplay if we just took small turns, we'll write it in larger chunks and just leave off where the other continues, and choose where each of us keeps going. I could start it out after we determine the characters, if that was confusing.) (Yeah. ok! YAY you even listed the charactersssss!!! And that's exactly what i was thinking XD It was confusing. Should be make forms?......and you can start if you want XD) 
    reply about 4 hours