Mission Unstoppable / Dan Gutman 304 p.

In this first of the Genius Files series, Coke and Pepsi McDonald are the objects of hit men.  Why?  They don't know.  They jump off a cliff to avoid being hit by blowgun darts shot by bowler derby wearing assassins.  They escape from a locked room at school during a fire.  They just miss drowning in a vat of Spam.  The why is revealed by Bones -- they are members of an ultra secret government group for super smart children (Young American Genius).  The YAG goal: solve complex problems plaguing the country.  Suddenly their vacation trip across the U.S. becomes more exciting.  They solve secret messages, foil murder attempts, and stop terrorists as they visit scintillating museums like the PEZ museum, the largest ball of twine, and culminating in the ultimate museum...House on the Rock.  This is a fast paced, suspenseful, humorous story grabs one's attention and holds it.  I kept wondering how the bad guys always seemed to be a pace ahead of the twins.  This may be just the thing for those who readers who grew up on Lemony Snicket's A Series of Unfortunate Events" books.