491 is a 1964 Swedish black-and-white drama film directed by Vilgot Sjöman, based on a novel by Lars Görling. The story is about a group of youth criminals who are chosen to participate in a social experiment, where they are assigned to live together in an apartment while being supervised by two forgiving social workers. The tagline is: It is written that 490 times you can sin and be forgiven. This motion picture is about the 491st.