Alors les différents personnages et leurs informations:
- Jamie Gillianson: he is the writter of the diary and he's telling us how he feels on the island. He's excited to be on the island and celebrated his 15th birthday the 20th March on the island.
- Tim: he is the little brother of Jamie, he's 7 years old and he doesn't know how long they are on the island, he feels sad and lonely
- Dad: he's a computer scientist, he builds a cabin with his son for the rest of the family.
- Mother: she worried about the absence of the father.