The Tashkent Files trailer: Mithun Chakraborty, Naseruddin Shah and Shweta Basu Prasad go deep into the investigation of Lal Bahadur Shastri's Death

The makers of filmmaker Vivek Agnihotri's upcoming film Tashkent Files released its trailer on Monday afternoon and here is how the director summed up the film's story-line: "Friends, the film.....