CREATE TABLE table_203_685 (id DECIMAL, "no. in\ series" DECIMAL, "no. in\ season" DECIMAL, "title" TEXT, "directed by" TEXT, "written by" TEXT, "original air date" TEXT)

the last episode of season one
SELECT "title" FROM table_203_685 ORDER BY "no. in\nseason" DESC LIMIT 1
SELECT "title" FROM "table_203_685" ORDER BY "no. in\nseason" DESC NULLS LAST LIMIT 1