CREATE TABLE table_2902 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "U.S. viewers  ( millions ) " TEXT)

Who directed the episode titled 'Redemptio'?
SELECT "Directed by" FROM table_2902 WHERE "Title" = 'Redemptio'
SELECT "Directed by" FROM "table_2902" WHERE "Title" = 'Redemptio'