And you know, there's a world of difference between the captain of a side who doesn't worry until the game begins and Grim's sort, who do their worrying beforehand and then play, and make the whole side play for every ounce that's in them.
"Mabel, you're Lawrence.

Keep silent, be shy, avoid encounters--act like a man who's not supposed to be here, but who came to help Feisul contrary to express commands laid on him by the Foreign Office.

Get that?
Lawrence is a shy man, anyway--hates publicity, rank, anything that calls attention to himself.

The more shy you are, the easier you'll get away with it.

Feisul must help pretend you're Lawrence.