"Vanhoillinen" is a novel by the Finnish writer Niilo Kivinen, which combines elements of a psychological thriller and a historical drama. The book tells the story of a scientist-historian who immerses himself in researching the events of the past, but suddenly finds himself at the heart of a mysterious crime. A sense of mystery and tension haunts the reader with every page, revealing new secrets and leading to an unexpected finale. "Vanhoillinen" is a book that will leave you on the edge between reality and the imaginary world and make you think about what is real and what is imaginary in our lives.