By Jon Stone, Author & Michael Smollin, Illustrator. Grover, now with pal Elmo by his side, has heard that there’s something lurking on the last page of the book. Grover tries his best in all sorts of hilarious ways to stop the reader from turning the pages. But, Elmo, curious as always, slips by every wacky barrier. Toddlers will find it hard to resist turning the pages too. For ages 3 and up.