Throughout the day, a young girl sees a friendly monster at school, at play, and even at bedtime. The monster is only visible when the lights are out.
- ISBN10 0679841946
- ISBN13 9780679841944
- Publish Date 17 February 1994
- Publish Status Out of Print
- Out of Print 10 August 2021
- Publish Country GB
- Publisher Penguin Random House Children's UK
- Imprint Random House Children's Books
- Format Paperback
- Pages 500
- Language English