Cilla and Tina are thirteen years old and identical twin sisters.

As they hurry to catch the bus to school one day, Cilla is run over by a car and killed.

The book follows the sisters during the months leading up to Cilla's death, and Tina's first year without her.

Just weeks later Jenny died, and Kinna contacted Pohl and asked him to help her write their story.

The film, called I Miss You (Jag saknar dig), was released in 2011.