What was the episode number for "Going Bodmin"?
CREATE TABLE "table1_21025437_2" (
  "episode_no" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "viewers_millions" text,
  "original_airdate" text
);
SELECT MAX("episode_no") FROM "table1_21025437_2" WHERE "title"='\"Going Bodmin\"';