CREATE TABLE table_26286 ("Episode #" FLOAT, "Prod #" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Originalairdate" CLOB, "Filmed" CLOB)

Who directed the episode written by Tony O'Grady (pseudonym of brian clemens)?
SELECT "Directed by" FROM table_26286 WHERE "Written by" = 'Tony O''Grady (pseudonym of Brian Clemens)'
SELECT "Directed by" FROM "table_26286" WHERE "Written by" = 'Tony O''Grady (pseudonym of Brian Clemens)'