'Grimm: The Essential Guide' is Free eBook of the Day

NBC has revised the eBook to support the release of the new season which kicks off on October 25th.

Check it out: “Some of the cool new features include new behind-the-scenes photos, a 360 degree view of the Exotic Tea & Spice Shop, exclusive photos from the Season 3 premiere, and the Creature Drawing Feature, where fans can create, save, and submit their own drawing of one of the creatures from the show.