first of all you need a media player called "VLC media player" just put it in your google search engine its free.(note this program is also used for streaming but thats not what i use it for. works fine as just a stand alone media player)
okay now when you next download a movie wait till at least a couple of percent is downloaded and go to your library, go to incomplete and then explore incomplete folder, find the movie your downloading and and right click it and then open with VLC player. you should now be able to sample the movie and youll also know wether its a prankster messing around with false titles and wether to terminate download.