Meet Ghost and his spooky friends in this split-page picture book with mirror ending!Knock, knock! Guess who? Children will love joining in this Halloween adventure as these friendly characters deliver Halloween treats to one another. Knock on the door and open it to reveal who has been booed!This not-so-spooky picture book is the perfect introduction to Halloween for little ones, with friendly characters, surprises under every door and a delightful mirror ending. This spooktacular story has been beautifully illustrated by Grasya Oliyko - a Ukrainian illustrator, currently living in Bratislava with her young daughter and two cats.