Watch King of the Underworld (1939) (1939) HD Full Movie Free on solarmovie.do. Watch King of the Underworld (1939) (1939) online free. After the killing of her husband by friendly fire during a police raid, Dr. Carole Nelson tries to f...After the killing of her husband by friendly fire during a police raid, Dr. Carole Nelson tries to find gangster Joe Gurney to clear her name with the medical board.