The mercury is a soundless or dumb movie thriller. The movie is about five friends from deaf and dumb school who goes in a house in the hill station and found that a man kills them one by one called him a ghost or killer.
Originally the story is about that the friends go for a nightdrive and kills a man who is Prabhu Deva and found them seen again in a chemical factory.
The movie is all silence which is filled by the background music or the sounds that make you feel horror. There is nothing new in the movie but the silence concept is bit cool which can be made more cooler by picturising more effects. The performance of Prabhu and other co actor was bit bad but the plot was good.
So I recommend you to don’t waste your time and money. Instead watch another movie if you plan a movie this weekend.