CREATE TABLE table_72725 ("Series #" FLOAT, "Season #" FLOAT, "Title" TEXT, "Directed by:" TEXT, "Written by:" TEXT, "Original air date" TEXT)

Who was 'The Magic Necklace' written by?
SELECT "Written by:" FROM table_72725 WHERE "Title" = 'The Magic Necklace'
SELECT "Written by:" FROM "table_72725" WHERE "Title" = 'The Magic Necklace'