Daniel Johnston is a manic-depressive genius singer / songwriter / artist, revealed in this portrait of madness, creativity and love. The Devil and Daniel Johnston is a stunning portrait of a musical and artistic genius who nearly slipped away. Director Jeff Feurzeig exquisitely depicts a perfect example of brilliance and madness going hand in hand with subject Daniel Johnston. As an artist suffering from manic depression with delusions of grandeur, Daniel Johnston’s wild fluctuations, numerous downward spirals, and periodic respites are exposed in this deeply moving documentary.