In this night time adventure, big Kelsey is always her brother's hero. She bravely helps with lost teddy bears, scraped knees, and favourite picnic foods. When Thomas can't sleep because of the lullaby monsters, Kelsey isn't sure she can help. Then Thomas' precious lullaby box is stolen, Kelsey must face her monstrous fear, and in doing so, she discovers the lullaby monsters are a lot like Thomas.

The Lullaby Monsters is a hybrid between picture book and early chapter book with six short chapters and plenty of illustrations. It will appeal to children who enjoy a bit of suspense and a longer than usual story.