Nancy Krulik has written more than 100 books for children and young adults, including twoNew York Times bestsellers. Her very first story (in first grade) was about how she wanted to be Mary Poppins so she could dance in the park with Bert and the penguins. Sebastien Braun (www.sebastienbraun.com) studied fine and applied arts at Strasbourg University in France. Since his move to London in 2000, he has been illustrating children's books.