"The Black Stranger" (a.k.a. "The Treasure of Tranicos") is a Conan the Barbarian story. There are 3 versions of this story. Two by Howard, and one by L Sprague De Camp. The original version was written in 1934 or 1935, first published in 1987. The second version by Howard was written c. 1936, and was first published in 1976. The de Camp version was first published in 1953, and further modified in 1967.