Let's make this birthday one to remember.

61 years old (Born on April 09, 1964)

Happy Birthday, Margaret Peterson Haddix! May your day be filled with more excitement than a clue hunt in "The 39 Clues," fewer mysteries than "The Missing" series (we promise not to vanish the cake!), and enough joy to make even Luke Garner step out of hiding. Your stories have captivated countless readers—proving you're truly one-of-a-kind.

Congratulations on all you've achieved—from thrilling adventures that keep us turning pages late into the night, to receiving prestigious honors like the International Reading Association Children's Book Award. Here's hoping this birthday chapter is as timelessly delightful as your unforgettable tales. Cheers!