CREATE TABLE table_28379 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" FLOAT)

Who is the directed by when the production code is 67425?
SELECT "Directed by" FROM table_28379 WHERE "Production code" = '67425'
SELECT "Directed by" FROM "table_28379" WHERE "Production code" = '67425'