Author David Machado hails from Lisbon, Portugal, and writes fiction for both adults and children. His books are popular in Portugal and have been awarded literary prizes, including the European Union Prize for Literature for the Portuguese version of this novel, Índice médio de felicidade (The Shelf Life of Happiness), which he adapted into a screenplay in 2016. When he’s not traveling, he lives in Lisbon with his wife and two children.