The great mystery thread - post yours here!

[JenBKR]

Well here is another one anyway:

A woman has proof in court that her husband was
murdered by her sister. The judge declares, "This is the oddest case
I've ever seen." Though it's a fact the sister killed him, this murderess cannot
be punished, why?

I think I heard this one before, so I'll leave it for someone else

[JenBKR]

*bump* to see if anyone wants to try the latest mystery question.