Jan Guillou
Jan Oscar Sverre Lucien Henri Guillou is a Swedish author and journalist born in 1944.
He gained fame as an investigative journalist, exposing a secret intelligence organization in Sweden in 1973.
Guillou is known for his spy fiction series featuring Carl Hamilton and his historical fiction trilogy about Arn Magnusson, a Knight Templar.
He co-owns Piratförlaget, a major Swedish publishing company.
Guillou continues to write columns for Aftonbladet.
In 2009, it was revealed that he had been recruited by the KGB in 1967, with his involvement lasting until 1972.
