Diana Murray is the bestselling author of Unicorn Day-of which Publishers Weekly wrote "Readers are sure to wish for their own Unicorn Day"-as well as One Snowy Day. Her poems have appeared in magazines, including Highlights for Children. She grew up in New York City and still lives nearby with her firefighter husband and two daughters. Visit her at dianamurray.com.
Luke Flowers is the illustrator of Unicorn Day and the New York Times bestseller A Beautiful Day in the Neighborhood: The Poetry of Mister Rogers. He also wrote and illustrated Jim Henson's Labyrinth: The ABC Storybook and illustrated That Monster on the Block. Luke lives in Colorado Springs, Colorado. You can find him online at lukeflowerscreative.com.

Unicorns settle down with their bedtime routine by brushing their manes and ensuring their horns gleam before singing their song and drifting off to dream.