Ok, so I was defragging my hard drive. The utility I use displays a scale representation of where the files are located on my hard drive and lets me look to see what is where. After a few random ones I came across some old recycled files and decided I'd check them out. Most of them were unfinished torrents and the like, but one of the files was an episode of Band of Brothers. It was a 2.18GB .mkv file with 720p output. It wasn't broken, either. It was the full file. It also had a corresponding .nfo file, so I'm assuming it came from a torrent.
I've never downloaded any episodes of Band of Brothers, though. I have no idea how this one made its way to my hard drive and then got itself deleted. Is there a utility I can use to check a file's local history?