"Kallocain" is a dystopian novel written by Swedish author Karin Boye in 1940. The story is set in a totalitarian society where the government prioritizes control and surveillance over individual freedom. The protagonist, Leo Kall, is a scientist who invents a truth serum called Kallocain, which forces people to reveal their innermost thoughts and feelings. As Kallocain is introduced to society, it raises ethical questions about privacy and the nature of truth. The novel explores themes of conformity, fear, and the loss of personal identity, making it a significant work in the genre of dystopian literature.