Two characters pursuing the same goal, usually rivals, independently wind up with the two halves of the same important clue.
Do We Have This One?? Seen It a Million Times. Rolling Updates, but may wait to add examples until launch time. Definitely Needs a Better Name, possibly Needs a Better Description. Would appreciate discussion instead of just examples. You may know the scene. The hero has obtained half of a letter or Treasure Map detailing the MacGuffin's location, but without the other half it's indecipherable. He casually mentions this to The Rival... who double-takes and pulls out the other half. The details of this scenario can vary. It doesn't have to be The Rival; it can be anyone else independently after the same goal. And it doesn't have to be a map or letter; it can be any important clue that's divided in pieces and worthless if not whole. Often a convenient excuse to make the Rivals Team Up.