what season was written by  jonathan collier?
CREATE TABLE "table1_25716399_1" (
  "series_no" real,
  "no_in_season" real,
  "title" text,
  "written_by" text,
  "directed_by" text,
  "original_air_date" text,
  "u_s_viewers_millions" text
);
SELECT MAX("no_in_season") FROM "table1_25716399_1" WHERE "written_by"='Jonathan Collier';