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Codes are simple sentences that show secretive Cahill activity hidden in the books. The following are the codes in book order.


Series 1 (The 39 Clues)[]

Maze of Bones: Anne Cahill did not drown. Cover message: Ireland

One False Note: Look to India. Cover message: Gideon

The Sword Thief: The competition is about Hope.

Beyond the Grave: Alistair was there the night they died.

The Black Circle: Remember MadeleineOlivia had another.

In Too Deep: Find the other Ekaterina scientist who came in too close.

The Viper's Nest: Grace=Madrigal leader, There is a Madrigal watcher.

The Emperor's Code: Madrigals are behind everything. They lay out the path the others will walk. The end is coming.

Storm Warning: He didn't tell them everything. (Coordinates for Jamaica)

Into the Gauntlet: The Cahills aren't the only ones looking for the clues, the Vespers are coming.

Vespers Rising: Time is running out for the ring keeper; Find Medusa.

IMG000049

Series 2 (Cahills vs. Vespers)[]

The Medusa Plot: GuardianDamien is alive; The mother was murdered.

A King's Ransom: I will move the earth; Sandreckoner

Dead of Night : Mole; Timbuktu; Manuscript Voynich

Shatterproof : Magellan, Isabel Kabra (picture), knotmole

Trust No One : Damien Vesper; The father is dead

Day Of Doom : Natalie, One other has the serum

These codes are only from the standard series story books. There are more from extra books.

Series 3 (Unstoppable)[]

Nowhere To Run: Debi Ann And Abigail Adams. Cover message: Atlantis. There is also

☀Σνεακυ Καρα, which translates to Sneaky Kara. (Edit by Jimmy Brown)

Breakaway: Serum unleashed. Cover message: Butterfly. Britannia.

Countdown: HOPEOLIVIA. Cover message: STARLING.

Flashpoint: The branches are back. Cover message: ???

Series 4 (Doublecross)[]

Mission Titanic: Ekats rule, the others drool! Cover message: Moscow. Disaster is in the air.

Mission Hurricane: Alek remembers.

Superspecial[]

Outbreak: The cat can destroy the world. Cover message: Havana

Guides[]

The Black Book of Buried Secrets: Danger! Doomsday. The kidnapping plot.

Secrets of the Madrigals: They seek to destroy us. They found us. I found nothing in Cambodia and am now in grave danger. They found us. The evidence points in the direction of the unthinkable - that James Cahill is a Madrigal! Edith's life is in imminent danger. Teacher, I cannot turn in my homework. A Madrigal ate it. Ior, for the last time - I do not hate to investigate the Madrigals. I stole (word wouldn't translate) I'm sorry that I'm cowardly -- all the brave ones have already died!

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