CREATE TABLE table_24771 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original airdate" TEXT, "U.S. viewers  ( millions ) " TEXT)

Who wrote the episode titled 'In the Dark'?
SELECT "Written by" FROM table_24771 WHERE "Title" = 'In the Dark'
SELECT "Written by" FROM "table_24771" WHERE "Title" = 'In the Dark'