Bullets, once fired, have their own stories to tell. In their unique signatures—the tiny markings, the tell-tale dents. Not very long after the assassination of journalist-activist Gauri Lankesh on September 5 last year, a piece of ballistic evidence—a vital part of the vast and complex jigsaw puzzle of conspiracies and murders—was seen by investigators in Karnataka as a link to the killing of rationalist-writer M.M. Kalburgi, who was gunned down in 2015 in Dharwad, more than 400km from Bangalore. Kalburgi’s killing, it is suspected, is further connected to the identically-executed murders of two other rationalists, Narendra Dabholkar (2013) and Govind Pansare (2015), in Maharashtra.