What is the author's style in The Secret Sharer by Joseph Conrad?

Conrad's style is seemingly simple: the story revolves around only a few events. However, the meaning of the story is complicated and ambiguous. Though the story is ostensibly about a murder, an escaped sailor and the relationship between two men who appear to mirror each other, it becomes clear that the story is actually about one man's search for self. The precise relationship between Leggatt and the captain is never fully defined, perhaps a comment by the author that the search for one's true nature can never be complete.