Knock, Knock! Who's There?

A silly and sturdy Sesame Street lift-the-flap book that reveals hilarious surprises!

Guess who's there, hiding behind doors and curtains and in boxes, hats, the cookie jar, and other places in this very funny Sesame Street lift-the-flap board book starring Elmo and his friends. Girls and boys ages 1 to 4 will giggle with delight when they lift the flaps of this sturdy interactive board book to discover who's hiding. From Super Grover and Abby Cadabby to Elmo and Bert, it's not always who they'd expect to find in some surprising hiding places!

Sesame Workshop, the nonprofit educational organization behind Sesame Street, aims to help kids grow smarter, stronger, and kinder through its many unique domestic and international initiatives. These projects cover a wide array of topics, which address specific needs, such as girls' education, financial empowerment, and autism. In 2019, Sesame Street will celebrate its 50th year of distributing quality educational content to families around the world. Sesame Street is the most trusted name in early learning.

Anna Ross is the combined name of two old friends who worked in children's publishing for many years as editors, writers, and editorial directors. Together, they wrote dozens of Sesame Street books, and between them they've racked up well over half a century of publishing experience! They now live on opposite ends of the country, and they are both still writing--and still friends!