"Y-yes."
"Very well. It is now noon. Do you know the Park? Do you happen to recollect a shady turn in the path after you cross the bridge over the swan lake? Here; I'll draw it for you. Now, here is the lake; here's the esplanade and fountain, you see. Here's the path. You follow it—so!—around the lake, across the bridge, then following the lake to the right—so!—then up the wooded slope to the left—so! Now, here is a bench. I mark it Number One. She sits there with her book—there she is!"
"If she looks like that—" began Carden. And they both laughed with the slightest trace of excitement.
"Here is Bench Number Two!" resumed the Tracer. "Here you sit—and there you are!"
MR. KEEN'S SKETCH OF THE RENDEZVOUS
"Thanks," said Carden, laughing again.
"Now," continued the Tracer, "you must be there at one o'clock. She will be there at one-thirty, or earlier perhaps. A little later I will become benignly visible. Your part is merely a thinking part; you are to do nothing, say nothing, unless spoken to. And when you are spoken to you are to acquiesce in whatever anybody says to you, and you are to do whatever anybody requests you to do. And, above all, don't be surprised at anything that may happen. You'll be nervous enough; I expect that. You'll probably color up and flush and fidget; I expect that; I count on that. But don't lose your nerve entirely; and don't think of attempting to escape."
"Escape! From what? From whom?"
"From her."