An associate of mine (not a friend) who was seemingly normal took out a 500,000 life insurance policy on his wife and bludgeoned her to death that evening.
This dirtbag got off on an insanity plea (the first succsessful insanity defense for murder in Washington state for 20 years). His argument was that he suffered from depression (which is probably true), was under a lot of stress at the time, and seeing the movie "Titanic" pushed him over the edge to a state of "temporary insanity."
Sounds perfectly logical to me.
Inquiring minds want to know:
Did he plead for mercy on the grounds that he had recently lost his wife?
Did he collect on the insurance policy?
Did he get paid? I'd dopubt it.