The Cat in the Hat Knows a Lot About That! has 40 half-hour episodes. PBS Kids renewed it for a second season of 20 episodes which premiered on September 10, 2012. A 20 episode third season is currently in development. Each episode features The Cat in the Hat (voiced by Martin Short), who leads neighbours Nick and Sally, the Fish, and Thing One and Thing Two on a variety of adventures in his "Thinga-ma-jigger", a Seussian contraption that can sprout wings, pontoons, booster rockets, change size, and do just about anything else necessary to further the adventure. The adventures are prompted by a question posed by either Nick or Sally
The Cat in the Hat Comes Back takes his hat off and unleashes a "Voom", which cleans up the spot, clears all the snow from the paths, and puts all of the Little Cats back into the Cat's hat. The Cat leaves, with the promise that he and the Little Cats, from A through Z, will return someday. The book ends in a burst of flamboyant versification, with the full list of little cats arranged into a metrically perfect rhymed quatrain, designed to teach the reader the alphabet. After the 2003 film adaption of the original story, it was planned to make a sequel based on "The