Publisher’s Weekly reports that Houghton Mifflin Harcourt has acquired the rights to a new Young Adult novel that retells the Anne Frank story, from the viewpoint of a different narrator. Annexed by Sharon Dogar is narrated by Peter van Pels, who was a boy that shared the attic space with Anne Frank and others.
http://www.publishersweekly.com/article/452305-HMH_Children_s_Buys_Buzzed_About_Anne_Frank_Novel.php