Full episodes of "Downton Abbey" are available to purchase for streaming on Amazon.com, as of June 2015. Short videos and episode previews are available on the Watch Online section of PBS.org.
Visit the Amazon.com home page, and perform a search for "Downton Abbey." Select a season, and then select an episode. You can purchase one episode or a full season, and each option is available in standard or high definition. Certain seasons are available free of charge for Amazon Prime members. You can also download episodes to a computer or mobile device.
To watch the show via PB.org, visit the website's home page, and click on Programs. Click on "Masterpiece," and then click on Watch Online. Next to Filter by, select "Downton Abbey" from the drop-down menu. Select a video from the Previews or Shorts section. The shorts section includes several different types of videos, including episode scenes, recaps and cast interviews.
"Downton Abbey" is a British series that premiered on Sept. 26, 2010, in the United Kingdom, and Jan. 9, 2011, in the United States. In the United States, it's part of PBS' "Masterpiece Classic." The production company releases each season on DVD and Blu-ray after it airs. Products related to the series include a soundtrack, "Downton Abbey: Original Music from the Television Series," and two books, "The World of Downton Abbey" and "The Chronicles of Downton Abbey."