The British-Cambodian writer and editor initially wrote ‘The Ministry of Time’ – her gripping sci-fi rom-com debut – as a joke for a handful of friends. The genre-bending thriller, which explores themes including immigration and environmentalism, became an instant bestseller. Even before the novel landed on bookshelves last month, the BBC beat Netflix in a bidding war to turn the book into a TV drama. Kaliane Bradley tells Georgina Godwin about the obligation she felt to write a “serious” book about Cambodia and the Khmer Rouge, her work at Penguin Classics as an editor, and how her funny and fantastical debut came about.