Mons grew up in a working-class household in the provincial town of Linkoping, Sweden, where the Malin Fors series is set. Before becoming a writer, he worked in journalism and is also a keen food critic. His first novel, Pesetas, was awarded the Swedish equivalent of the Whitbread Award. He has been married to Karolina for over 20 years, and they live in Stockholm with their daughter and son.