The novelist Anna Kavan, writes Dalrymple,
was for many years dependent on Karl Theodor Bluth, a psychiatrist who had been an exile from Nazi Germany and came to live in England. She found in him a soul mate, and it was he who supplied her, legally, with her heroin, sometimes injecting her with it. Bluth was himself a writer, having published essays in Cyril Connolly’s Horizon and a book on the philosophy of Leibnitz.