CREATE TABLE table_24704 ("Series #" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Prod. code" CLOB)

Who wrote the episode titled 'heroes'?
SELECT "Written by" FROM table_24704 WHERE "Title" = 'Heroes'
SELECT "Written by" FROM "table_24704" WHERE "Title" = 'Heroes'