CREATE TABLE "table1_27401228_1" (
  "no" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "production_code" text,
  "u_s_viewers_million" text
);

Question: Name who directed when the viewers is 5.86
SQL: SELECT "directed_by" FROM "table1_27401228_1" WHERE "u_s_viewers_million"='5.86';