Just finished this book with my 11 yr old
This is the 2nd book in a series by Morris Gleitzman, set during WW2.
Felix & Zelda are living with a kind woman on a farm using false names to survive the Nazi's.
Constantly in jeopardy of their true identities being revealed the 2 children stick together & become very close during this very risky & scary time
Protected by the woman, they live through the year with her.
The ending took me by surprise!