Quote from Frasier in Give Him the Chair!
Frasier: Ooh, "Ten Little Indians." I thought I recognized the mise en scene. I did this play years ago. "On the contrary, Major. Many a psychotic killer would appear to be quite normal. You see, you can never suspect that underneath that calm exterior there lies the heart of a maniac, ah-ha-ha." Happens to be true, by the way.