Nicholas Day is the author of The Mona Lisa Vanishes, a middle-grade book of narrative nonfiction about the wild, improbable story of how the Mona Lisa was stolen—and how it became the most famous painting in the world.

For adults, he’s the author of Baby Meets World, a work about the science and history of infancy, which Mary Roach called “a perfect book.”

He has written regularly for Slate; his work has also appeared in The Atlantic, The New York Times, and The Washington Post, among other publications. He lives in Western Massachusetts with his family.

Nicholas is represented by Brenda Bowen at The Book Group. He can be reached at nicholassday@gmail.com.