Archie's sister, Lucy, has an invisible friend. Archie thinks she's being silly. Until Terrible Trevor appears and he realises that having an invisible friend might be fun after all...
- ISBN10 0750268719
- ISBN13 9780750268714
- Publish Date 6 December 2012
- Publish Status Out of Print
- Out of Print 5 February 2016
- Publish Country GB
- Publisher Hachette Children's Group
- Imprint Wayland
- Format Paperback (B-Format (198x129 mm))
- Pages 32
- Language English