When American newspaperman and adventurer Henry M. Stanley returns from the western Indian wars, his editor, James Gordon Bennett, sends him to Africa to locate Dr. David Livingstone, the missing Scottish missionary. Stanley famously greets him with the words, "Dr. Livingstone, I presume," and finds him administering medicine and religion to the local people. Upon Stanley's return with the story, his account is initially met with disbelief. After Livingstone's eventual death, Stanley chooses to continue the doctor's humanitarian work, though the film takes liberties with historical events. Cast: - Spencer Tracy as Henry M. Stanley - Nancy Kelly as Eve Kingsley - Richard Greene as Gareth Tyce - Walter Brennan as Jeff Slocum - Charles Coburn as Lord Tyce - Cedric Hardwicke as Dr. David Livingstone - Henry Hull as James Gordon Bennett, Jr. - Henry Travers as John Kingsley - Miles Mander as Sir John Gresham - David Torrence as Mr. Cranston - Holmes Herbert as Sir Frederick Holcomb - C. Montague Shaw as Sir Oliver French (as Montague Shaw) - Brandon Hurst as Sir Henry Forrester - Hassan Said as Hassan - Paul Harvey as Colonel Grimes - Russell Hicks as Peace Commissioner - Frank Dae as Peace Commissioner Runtime: 101 minutes.