Star Trek: Deep Space Nine1993

Garak:
If you can allow your anger to subside for a moment, you'll see that they did *not* die in vain! The Romulans will enter the war!

Captain Sisko:
There's no guarantee of that!

Garak:
Oh, but I think that there is. You see, when the Tal Shiar finishes examining the wreckage of Vreenak's shuttle, they'll find the burnt remnants of a Cardassian optolythic data rod which somehow miraculously survived the explosion. After painstaking forensic examination, they'll discover that the rod contains a recording of a high-level Dominion meeting, at which the invasion of Romulus was being planned.

Captain Sisko:
And then they'll discover that it is a *fraud*!

Garak:
Oh, I don't think they will! Because any imperfections in the forgery will appear to be a result of the explosion. So - with a seemingly legitimate rod in one hand, and a dead senator in the other, I ask you, Captain - what conclusion would you draw?