Who wrote the episode titled "In the Dark"?
CREATE TABLE "table1_22078906_2" (
  "no_in_series" real,
  "no_in_season" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_airdate" text,
  "u_s_viewers_millions" text
);
SELECT "written_by" FROM "table1_22078906_2" WHERE "title"='\"In the Dark\"';