What are the titles of episodes written by Eric Trueheart?
CREATE TABLE "table1_29087004_3" (
  "series_num" real,
  "production_code" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "united_states_original_airdate" text,
  "canada_original_airdate" text
);
SELECT "title" FROM "table1_29087004_3" WHERE "written_by"='Eric Trueheart';