Jess is an 8-year-old child who can't find her place at school, or anywhere else.
She can't cope with reality, and the problem gets bigger after a trip to Nigeria, where she meets Tilly-Tilly, a girl about her age who's really her dopplegänger, and who in turn appears to have some kind of personality disorder.
At some point Jess's dead twin sister makes an appearance, too, and things start getting really complicated, interfering with the only true friendship that Jess has found.
African folklore intertwines with psychological matters and ghost stories, and even though the book is really well written and the plot is consistent, these are probably too many subjects for a mere 300 pages' book. I found the last chapter a bit too confusing, I'm not even sure I understand what has happened in the end.
Great book. I loved it, also for the description of how it must be, for a girl grown up in Europe, going to the country one of her parents is from, thinking it will be home, and then finding herself in a place that almost feels like another planet.
I'll probably read it again!