This story would never have happened without hours spent wandering around the Dunedin Botanic Garden. For that I am grateful for my time as the University of Otago College of Education/Creative New Zealand Children’s Writer in Residence. Impossible things seemed to be lurking around each corner of the park and the first draft was written during my last week in Dunedin. Also thanks to my first readers Ced, Clare Scott and Dawn. Many thanks to the wonderful Catherine O’Loughlin from Penguin Random House and to my editor, Emma Neale, for her sharp eye.