On May 17, 1968 nine Vietnam War protesters led by Daniel and Philip Berrigan, walked into a Catonsville, Maryland draft board office, grabbed hundreds of selective service records and burned them with homemade napalm. Investigation of a Flame is an intimate, experimental documentary portrait of the Catonsville Nine, this disparate band of resisters who chose to break the law in a defiant, poetic act of civil disobedience. How did the photos, trial publicity and news of the two year prison sentences help to galvanize a disillusioned American public? Investigation of a Flame explores this politically and religiously motivated performance of the 1960