Sara Pennypacker is the author of several acclaimed novels for middle-grade readers, including the #1 New York Times bestselling Pax (a National Book Award Longlist title) and Pax, Journey Home; the Clementine series (Boston Globe-Horn Book Award Honor) and its spinoff series, Waylon; and Summer of the Gypsy Moths, Here in the Real World, and Leeva at Last. She divides her time between Cape Cod and Southern California.

Jon Klassen is the New York Times bestselling author and illustrator of many award-winning books. He won the Caldecott Medal for This is Not My Hat, and Caldecott Honors for Extra Yarn and Sam and Dave Dig a Hole (both by Mac Barnett). His previous titles with Sara Pennypacker include Pax; Pax, Journey Home; and Here in the Real World. Jon grew up in Niagara Falls, Canada, and now lives in Los Angeles, California.

An Instant Indie Bestseller

"Pennypacker's illuminating and stirring historical fiction will leave middle grade readers feeling deeply inspired, righteously angry and firmly resolved." --The New York Times

"A beautiful tribute to bravery in its many forms and the power that children and women can wield." --Booklist (starred review)

"A page-turning and ultimately triumphant tale of heroism." --The Horn Book Magazine (starred review)

"Richly descriptive writing and steadily building suspense make for a genuinely satisfying read." --Publishers Weekly (starred review)

"Compassionate and complex." --Kirkus Reviews (starred review)

"Through Lucas's eyes, readers experience terror and heroism in a time of war, and the prose gallops along with authenticity and incredible suspense....Pennypacker's work of historical fiction that seems all too real will intrigue reluctant readers from the first startling chapter. Highly recommended." --School Library Journal (starred review)

"Lucas DuBois is proof that a mere kitten can be the bravest of lions by always standing up for what's right." --Alan Gratz, New York Times bestselling author of Refugee

"Heart-pounding and heartwarming, this story of a boy standing against injustice will have you racing through the pages to its startling, triumphant end." --Kimberly Brubaker Bradley, Newbery Honoree for The War That Saved My Life

"A beautiful story of bravery and resistance. The Lions' Run reminds us that more than size or strength, heroism begins with heart." --Ruta Sepetys, International bestselling author of Between Shades of Gray