A Simple Plan (1998)
Peter Syvertsen: FBI Agent Freemont
[Hank talks to the FBI agents about the money]
FBI Agent Renkins : It's only part of it. We're still tracking down the rest.
FBI Agent Freemont : Yeah. It's just a matter of time.
Hank Mitchell : A matter of time?
FBI Agent Renkins : Well, we had the money for 2 hours before the kidnappers picked it up. Couldn't mark it. We were afraid they'd detect the markings and kill the girl. So, um... We put together a task force of 20 agents, and they wrote down as many of the serial numbers as they could. They managed to record just around 5,000 of them. It's one out of the ten of the bills. Now, it's simply a matter of waiting for the numbers to turn up. Can't go around passing $100 bills without eventually sticking in someone's memory.