[ Gush away, dear Piter. He does so enjoy these little chats because underneath the casual surface lies a profiler in wait, quietly memorizing the trigger words and facial ticks and micro-expressions. It's informative without being invasive and that's really the best he can wish for right now.
His brows furrow in confusion at that short pause — he didn't catch the implication either, despite being the one who said it — and when Piter continues he can't help but make a skeptical noise. ]
In my experience, most killers prefer a more hands-on method. The method is usually a representation of the emotions that drive the perpetrator — for instance, stabbing is often a sign of sexual inadequacy or frustration. Poison is a cleaner, more detached method and as such it's more commonly used when the killer doesn't want a personal or emotional connection with their victim.