Cammie and Tessa and Nate live in the White House. Cammie and Tessa’s mom is the President of the United States. They solve mysteries and call themselves the First Kids. This mystery involves a dinosaur egg that disappeared from a museum. Their investigation leads them to many different places and people, but in the end they are able to return the egg to the museum. I think this is a great mystery for the beginning chapter book reading child. The story is fun and keeps you guessing. I like all the White House facts included in the book.