Skipper: What's happened in every murder case that you ever read about?
Gilligan: Somebody gets killed.
Skipper: Right. Gilligan, I give up.
Gilligan: Don't worry, Skipper. I have a few ideas. What we have to look for is the most innocent-looking person. And that person will be guilty.
Skipper: The most innocent-looking person?
Skipper: And which one of us might that be?
Gilligan: It's the Professor, naturally. He's the most innocent-looking person, so he's got to be guilty.
Skipper: The Professor wouldn't kill a fly, Gilligan.
Gilligan: Yeah he's saving up his strength to kill people.