Yes.
Before fingerprinting the police had tried ways to extract confessions out of people, including a documented practice of standing outside a perp’s window in the dark and calling out that they were the ghost of the victim and why did you kill me?
Yes.
Before fingerprinting the police had tried ways to extract confessions out of people, including a documented practice of standing outside a perp’s window in the dark and calling out that they were the ghost of the victim and why did you kill me?