CREATE TABLE table_1337 ("Series #" FLOAT, "Season #" FLOAT, "Title" TEXT, "Directed by:" TEXT, "Written by:" TEXT, "Original air date" TEXT)

Who wrote the episode where the series number is 74?
SELECT "Written by:" FROM table_1337 WHERE "Series #" = '74'
SELECT "Written by:" FROM "table_1337" WHERE "Series #" = '74'