The Start of Train, a 39 Clues FanFiction

AU-ish.
The Cahills have experienced it all and yet they are faced with another challenge.
Five hundred years' worth of lies and deception is what the young generation of Cahills are trying to break. From the cunning Lucian (Ian and Natalie Kabra), the ingenious Ekat (triplets Sinead, Ted and Ned Starling), the athletic Tomas (Hamilton, Madison and Reagan Holt), the creative Janus (cousins Jonah and Phoenix Wizard) up to the serene Madrigals (Amy and Dan Cahill), they must find a way to defeat the Vespers using their own wit and strategies.
Fate seems to think that only by fighting together could they beat all odds. The plan: Be Each Other. Everyone stays at the Cahill mansion, the renovation of the shattered mansion of Grace Cahill.
Would they succeed when each one of them was born and still living in lies? Or would they be a house divided against itself that can never stand?
DISCLAIMER: Every character in The 39 Clues think that I DON'T OWN THE 39 CLUES SERIES, nor ITS SUCCESSOR CAHILLS VS. VESPERS... So I DON'T. Stop bugging me already!! (screams and runs away)