Whodunit? in New Logic/Math Puzzles Posted January 13, 2018 · Edited January 13, 2018 by Molly Mae · Report reply I don't think there's a way to be certain that any of the brothers killed Eddie. On 1/4/2018 at 2:50 AM, bonanova said: It was known that, of the four, at least 3 were absolute truth-tellers. We know that all 4 aren't absolute truth-tellers. But that doesn't mean that one of them is an absolute liar. On 1/4/2018 at 2:50 AM, bonanova said: All four, of course, denied murdering their brother. All four of them might be telling the truth in this case. On 1/4/2018 at 2:50 AM, bonanova said: Dick: ... I figured out that one of my 3 (living) brothers is lying. Whether Dick (or the brother to which he is referring) is lying or telling the truth, we still can't infer that he killed Eddie, since he may not be an absolute liar.