It's been months since Stevie Diamond and Jesse Kulniki solved their first mystery, in "How Come the Best Clues Are Always in the Garbage?"
Since then they've tracked suspicious-looking types all over the neighborhood, but there hasn't been a mystery in sight. Stevie and Jesse might as well take a vacation. And that's just what they do- at the tree-planting camp that Stevie's dad runs in northern B.C.- a month before school is over. Perfect, right? Well, maybe.
Stevie hadn't counted on having to look after Alexander Creely, a five-year-old who can't keep quiet. But when she discovers that Rubberface Ragnall, a smuggler, has been ransacking Alexander's house, Stevie is intrigued. Suddenly, baby-sitting is the perfect summer job for the Diamond and Kulniki Detective Agency.