The wackiest road trip in history has reached its final destination...

But Coke and Pepsi McDonald aren't in the clear just yet! Before they reach the finish line, the twins will be abducted by aliens, trapped with a venomous snake, pushed through a deadly turbine, and thrown into a volcano.

Craziest of all, their parents might finally believe them!

Will the twins make it back home to California in one piece, or will they fall off the top of the Golden Gate Bridge? It's all coming to an end with this fifth book in the Genius Files series. You'll have to read it to believe it!