Clyfford Still’s striking compositions and idiosyncratic personality made him one of the preeminent figures of the American Abstract Expressionist movement. Through interviews and previously unreleased recordings, Still’s artistic philosophy and his relationships with contemporaries Mark Rothko and Jackson Pollock are revealed. After his death, the legacy of the enigmatic artist faces further uncertainty, as museums vie to be the permanent home of the Still collection—if they can meet the strict demands of his will.