Jan Guillou is arguably the best-known writer and journalist in Sweden. He wrote 10 books about Swedish agent Hamilton, and a follow up to the Hamilton series, called Hamlon, in a very limited edition. But his best book is "Ondskan", which he wrote in 1981. It is about a young man called Erik. It's a self biography, Erik is Jan. Jan Guillou was in a Swedish prison for 10 months in the 70s. He had exposed the Swedish intelligence force allegedly doing something illegal.