The Genius Files Books in Order

Twins Coke and Pepsi McDonald expect a dull family road trip until assassins and coded messages follow them across America. With their parents unaware of the danger, they must uncover who wants them dead and what the Genius Files mean.

Coke and Pepsi McDonald's dangerous family road trip continues as Archie Clone pursues them across America. From museums to stadiums and amusement rides, the twins face elaborate traps while their parents keep treating their warnings as jokes.

Coke and Pepsi McDonald continue their family road trip toward Graceland while enemies prepare new ambushes. A masked villain called Evil Elvis joins the pursuit, leaving the twins to decode messages and survive attacks among America's unusual tourist attractions.

Coke and Pepsi resume their cross-country trip in a convertible, traveling toward Texas while their old enemies claim to have quit chasing them. New coded messages from a robotic voice suggest another pursuer is waiting to catch them.

Coke and Pepsi face the final stretch of their dangerous road trip after encountering a strange light in Roswell. Traveling toward the West Coast, they must survive more villains and deadly traps while hoping their parents finally believe their warnings.