Coke and Pepsi McDonald are a perfectly ordinary twin brother and sister on a cross-country RV trip with their parents. Except for one thing–they are also being chased by a bunch of psychos who are trying to kill them as they stop along the way at The National Yo Yo Museum, The Spam Museum, and various other offbeat tourist attractions. Who is trying to kill the McDonald twins, and why? You’ll have to read The Genius Files to find out. This will be way more exciting than any summer vacation you’ve ever taken.
There are 5 books in the series. It's easy to get caught up in the crazy adventures the McDonald twins encounter.