Which episode was the last written by chris hawkshaw this season?
CREATE TABLE "episodes" (
  "no_in_series" real,
  "no_in_season" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text
);
SELECT MAX("no_in_season") FROM "episodes" WHERE "written_by"='chris hawkshaw';