33.
If I’m M, I’m already at the airport. I landed an hour ago, and I’ve got several hours to kill before my driver shows up. Instead of going to the main terminal, I surround myself with people by going from gate to gate, and sit among the crowds waiting to board the various planes. I sit at gate A12 for a half hour, then go to A27 and read a book or check my emails. Then I go somewhere else. I’m not worried about my unclaimed luggage because I didn’t check any. I’ve got a single bag that contains my laptop, a modest amount of cash, and a few articles of clothing. My cell phone is not only turned off, but the battery has been removed.
My three accomplices will be arriving, or have already arrived, on three separate flights. They also randomly move from gate to gate until we’re all sitting at the same gate, waiting for a particular flight to land, probably around 9:45. We don’t make eye contact or acknowledge each other in any way, but when the passengers exit the plane at this gate, the four of us merge with them and head to baggage claim.
The driver and limo company I’ve reserved are people I trust. Which means I have a way of knowing if the guy holding the sign is the right guy. He’ll signal us that everything is okay, or if there’s a problem. Something we’ve predetermined, such as which hand he holds the sign in, or if his other hand is in his pocket, if he puts on a hat, or whatever. Which means Darwin’s plan to use me as the limo driver wouldn’t have worked.
But I already knew that.
If I’m M I have one of my accomplices approach the limo driver. The rest of us are at three different locations, with line of sight to the driver. If all goes well, Accomplice #1 and the driver get in the car and make a circle around the airport, and end up at passenger drop off upstairs, where Accomplice #2 is waiting. He walks out the door and climbs into the limo. They drive away, get on the interstate, go a few miles, turn around and come back. I’m downstairs again, at baggage claim. When the limo driver comes in the door with a different sign, I walk past him and get in his car. While Accomplice #3 meets him at baggage claim, I drive the limo away, leaving the real driver and Accomplice #3 at the airport.
It’s foolproof, because if at any point there’s a problem, M can just walk out the door and catch a cab. He’d prefer not to, because the cab driver might be able to identify him later. Not a big deal, but still a loose end.
Now all I have to do is figure out which of the four is M.
Assuming I’m right about there being four.
Good thing I’ve got a plan for that. And for getting away after I shoot him.