Harriet M. Welsch turns 50 this year, but she doesn't look a day over 11.

Louise Fitzhugh's award-winning children's book "Harriet the Spy" about the young tomato sandwich-eating sleuth has been translated into several languages, turned into a movie and continued to captivate the imaginations of children for decades.

Author and editor Leila Sales wrote about Harriet the Spy for Al-Jazeera America and joined us to share her memories of the beloved book.