While looking for his lost magnifying glass in the park, young Detective Jeffrey Bones and his grandfather discover that Curly the detective dog is missing, too, and start tracking down clues.
Using her excellent memory, Cam Jansen, aided by her friend Eric, investigates the disappearance of Mrs. Scott's valuable pearl necklace during a charity brunch.
Detective Jeffrey Bones hates taking math tests, especially one he has forgotten to study for, so when his test paper goes missing he must make a choice--retake the test and try to do better, or find the missing paper.