Agatha Christie is the biggest selling novelist in world history. Well over 2 billion books sold in 103 languages. She is the forever queen of mystery. But her biggest mystery is her 1926 disappearance. It made headlines all over the world.

The Backstory: Simplicity and the Greatest Jewel Heists
10:11

The Backstory: Stevie Nicks: Waitress to Rock Goddess to Taylor Swift Wedding Singer
08:50

The Backstory: Thicker Than Blood: Ben Franklin Ditches His Royalist Son
07:35