CREATE TABLE table_26054 ("Episode #" FLOAT, "Season #" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original airdate" CLOB, "Production code #" FLOAT)

List all directors when Brad Radnitz was the writer?
SELECT "Directed by" FROM table_26054 WHERE "Written by" = 'Brad Radnitz'
SELECT "Directed by" FROM "table_26054" WHERE "Written by" = 'Brad Radnitz'