Hi!
Many other sites place automatically generated links to opensubtitles.org. So Google follow this links and put it into their index.
If you search for "site:www.opensubtitles.org 24.S06E05" you get results like this one:
http://www.opensubtitles.org/en/fixinpu ... iD-24FEVER
But there is no search result for this query. It would be good if you place a "noindex"-meta tag into empty search results because it doesn't make sense:
<meta name="robots" content="noindex">
Perhaps it isn't easy to write such a meta tag into the head area of the page because the database request is made after generation of the head of the html page. But I think it's not really necessary to place such Meta tags into the HEAD area. You can also add the meta tag to the message: "No results found..." so it can be easy implemented.
Greetz
Jens