When does Harold and the Purple Crayon return?

Harold and the Purple Crayon is a 1955 children's picture book written and illustrated by Crockett Johnson. The story is written in third-person point-of-view, and follows a young boy on an imaginative adventure through the night. In 2011, the story was adapted as an interactive book for the iPad. In 2001, the stories were adapted into a 13-episode television series for HBO.