"WILL THIS CASE ROLL AWAY? The Earth Day Fair is days away, but Nate's classroom project-a robot named Mr. Butler-has disappeared. Nate the Great and his dog, Sludge, take on the unusual case, and they are soon searching high and low in and around the school. Will Nate find the robot in time for the fair?"-- Provided by publisher.

"World's Greatest Detective!"--Cover. "Activities Inside"--Cover. Originally published in hardcover in the United States by Delacorte Press, Penguin Random House LLC, New York, in 2021.