just a suggestion.
you are given a target, lets call him James, you have no idea where he is so you make contact with a source, lets call him Austin, Austin is told where James is located by the GM’s, Austin has to then pass this “Intel” on to you via a dead drop, or something equally sneaky, you then have to track James down and pick a moment to “Assainate” him, by either painting him with a laser dot, or handing him a card that says “You are Dead”.
That includes two different parties, agents and “Assets” and you have to be sneaky so that your target does not get wise to you, plus it allows the possibility for a double cross.
as i said just a suggestion, i have been thinking about a game like this for AGES!! and would love to figure out a way to get it going, and i have lots of ideas.