CREATE TABLE table_12226390_4 (no_in_season INT, written_by VARCHAR)

What episode was written by Bobby Bell and Bill Lee?
SELECT MAX(no_in_season) FROM table_12226390_4 WHERE written_by = "Bobby Bell and Bill Lee"
SELECT MAX("no_in_season") FROM "table_12226390_4" WHERE "Bobby Bell and Bill Lee" = "written_by"