David Lagercrantz made his debut as an author with Ultimate High: My Everest Odyssey, about the Swedish mountaineer Göran Kropp, which became an international bestseller. Since then he has devoted his career to writing about geniuses and exceptional people who go against the flow and blaze their own trails. Lagercrantz achieved critical and commercial success with a novel based on the life of the computer pioneer Alan Turing. He has written several other works of fiction and nonfiction, and he also lectures on creative writing.