Samantha Berger has written picture books including What If., Crankenstein and A Crankenstein Valentine , Witch Spa , Snoozefest , Santa's Reindeer Games , and Martha Doesn't Say Sorry , which won a Parent's Choice Award Honor. When she isn't writing, she's doing voice-overs, traveling the world, and helping rescue dogs. Samantha splits her time between New York City and California. Kerascoët is the pseudonym for New York Times bestselling husband and wife team Sebastien Cosset and Marie Pommepuy, whose comics and graphic novel work Publishers Weekly has called "unforgettable." They work in ink and watercolor. They recently illustrated Malala's Magic Pencil by Malala Yousafzai and James Patterson's Jacky Ha-Ha , and their own I Walk with Vanessa . They live in Paris, France.