Caitlin is the only young person living on Middle Island. On the first day of vacation, she finds a tiny alien on the beach. Caitlin becomes close to her secret friend, whom she names Perijee, teaching him everything about her world and treating him like a brother.
- ISBN: 9780399553974
- Author: Montgomery, Ross
- Published: 2016 , Wendy Lamb Books
- Themes: Adventure and adventurers, Extraterrestrial beings, Friendship
- Descriptors: England (UK), Fiction, Intermediate (ages 9-14)
- No. of pages: 224