This script allows you to search for torrent, subtitle and trailer in IMDB site itself.
Currently it works on 3 imdb patterns like www.imdb.com/title/* , wwww.imdb.com/list/* and wwww.imdb.com/genre/*.
Feel free to inform if you need some thing to be added , modified and bugs.

I'd also recommend https://greasyfork.org/en/scripts/2513-torrentz-eu-magnet-and-direct-links using this link to download the torrent from torrentz website.

Regards,
WarCode!!