Kurtz (Heart of Darkness) circumstances and remote settings to assert power over others. It is widely believed that Conrad drew influence from these characters, as well as Stevenson's plot lines, when writing "Heart of Darkness". In the 1958 loose adaptation for the CBS television anthology series "Playhouse 90" Kurtz was played by Boris Karloff. This version uses the encounter between Marlow and Kurtz as its final act, and adds a backstory in which Marlow had been Kurtz's adopted son. Francis Ford Coppola's acclaimed Vietnam War film "Apocalypse Now" (1979) centers on the protagonist's mission to find and kill the renegade Colonel Kurtz (played by
Joseph Conrad Conrad or any of his narrators, personified or otherwise, claim superiority on the part of Europeans on the grounds of alleged genetic or biological difference". If Conrad or his novel is racist, it is only in a weak sense, since "Heart of Darkness" acknowledges racial distinctions "but does not suggest an essential superiority" of any group. Achebe's reading of "Heart of Darkness" can be (and has been) challenged by a reading of Conrad's other African story, "An Outpost of Progress", which has an omniscient narrator, rather than the embodied narrator, Marlow. Some younger scholars, such as Masood Ashraf Raja, have