A production by the Civilians, a theatre troupe dedicated to investigative theatre (whose prior investigations included "Paris Commune" and "Gone Missing"). Written by Bess Wohl, "Pretty Filthy" is set in the capital of porn, the San Fernando Valley (showcased in the film "Boogie Nights"). It is a musical, with score and lyrics by Michael Friedman, whose work includes The Fortress of Solitude and Bloody Bloody Andrew Jackson.