By Anna Westendorf
Usually, there are few things that spark a good story like sex and murder.
Art and Jim Mitchell were the 20th century forerunners of the porn industry in San Francisco. From films such as Behind the Green Door in 1972 to their celebrity-frequented adult club, The O'Farrell Theatre, the Mitchell Brothers quickly raised a racy, naked empire. However, the empire came crashing down in 1991 when Jim shot and murdered Art.