CREATE TABLE table_30599 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "U.S. viewers  ( million ) " TEXT)

Who wrote the episodes that were directed by Peter O'Fallon?
SELECT "Written by" FROM table_30599 WHERE "Directed by" = 'Peter O''Fallon'
SELECT "Written by" FROM "table_30599" WHERE "Directed by" = 'Peter O\'Fallon'