An island of our own by Sally Nicholls.

An island of our own by Sally Nicholls. Scholastic 2019. 

In the aftermath of death, what happens? 

Holly and Davey's parents have both died - their mother a year before the book begins. 

In that year, Holly has been growing up and helping care for her younger brother, Davey. While their older brother is their legal guardian and carer, doing everything he can to hold the family together - at 19. 

An adventure and treasure hunt, only tangentially about grief. But a lot about coping in the aftermath.