Here is the key to the house. In the house burns a light. In that light rests a bed. On that bed waits a book... A spare, patterned text and glowing pictures explore the origins of light that make a house a home in this bedtime book for young children. Naming nighttime things that are both comforting and intriguing to preschoolers--a key, a bed, the moon--this timeless book illuminates a reassuring order to the universe.