WHAT SERIES WAS RELEASED BY ITV STUDIOS AND A RELEASE DATE OF AUGUST 15, 2012?
CREATE TABLE "dvd_and_blu_ray_releases" (
  "release_title" text,
  "series" text,
  "no_of_dv_ds" text,
  "no_of_blu_ray_discs" text,
  "release_date" text,
  "episode_no" text,
  "region_no" real,
  "released_by" text
);
SELECT "series" FROM "dvd_and_blu_ray_releases" WHERE "released_by"='itv studios' AND "release_date"='august 15, 2012';