Sam is a ten-year-old mad scientist, but she doesn't blow up stuff or change kids into cats that bark. She just has a little trouble keeping a lid on her temper, and she "ab-so-lutely" loves science, especially rocks.

Her family is planning a trip to the Grand Canyon, so Sam works hard to stay out of trouble. It isn't easy for this fourth-grader because she has to deal with a bossy sister, a busy mom who's obsessed with birthday cakes, and a playground bully who calls her a science freak.

Will she bubble over once too often and miss seeing the Grand Canyon? Will she get up the nerve to question her mom about her dad? Will Sam survive the class cave trip, a rocky talent show, and a surprise party without getting into trouble?

With a mouth that seems to have a mind of its own, a brain full of science facts, and a heart that's heavy, Samantha Hansen meets every challenge straight on. This kid ROCKS!