CREATE TABLE table_29683 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "U.S. viewers  ( millions ) " CLOB, "Original U.S. air date" CLOB, "Prod. code" CLOB)

how many directors had the episode called 'magic unmasked'?
SELECT COUNT("Directed by") FROM table_29683 WHERE "Title" = 'Magic Unmasked'
SELECT COUNT("Directed by") FROM "table_29683" WHERE "Title" = 'Magic Unmasked'