One Tree Hill was produced by Warner Bros. Entertainment. The copyright is actively protected by the Alliance for Creativity and Entertainment (ACE), a global coalition of major studios. When you torrent a file, you aren't just downloading it—you are uploading pieces of it to other users via the BitTorrent protocol.
Public torrent sites are often hotbeds for malware and viruses disguised as video files. One Tree Hill Season 1 Torrent Downloads