Sometimes being a good scientist requires putting aside your emotions. But what happens when objectivity isn't enough to make sense of a seemingly senseless act of violence? Lulu Miller introduces us to Jeff Lockwood, a professor at the University of Wyoming, who spent a part of his career studying a particularly ferocious set of insects: Gryllacrididae. Or, as Jeff describes them, "crickets on steroids." They have crushingly strong, serrated jaws, and launch all-out attacks on anyone who gets in their way -- whether it's another cricket, or the guy trying to take them out of their cages. Jeff started wondering what their fierceness could tell him about the nature of violence... and that's when the alarm bells went off. Jeff would picture his mentor, Dr. LaFage, lecturing him back in college -- warning him not to slip into a muddled, empathic mood, not to let his emotions sideswipe his objectivity. But then one night, something happened that gave Dr. LaFage's advice a terrible new kind of significance. Tamra Carboni tells us this part of the story, and challenges Jeff's belief that there's a way to understand it.