"I haven't had a chance to walk," she said.

"But you should walk," he said. "I--will you walk with me? Just about
the square, for air?" And in a lower tone: "It is not necessary that
those two should know the plan, mademoiselle."

"I'll get my coat and hat," Sara Lee said, and proceeded to do so in a
brisk and businesslike fashion. When she came down Henri was emerging
from the telephone booth. His face was impassive. And again when in
time Sara Lee was to know Henri's face better than she had ever known
Harvey's, she was to learn that the masklike look he sometimes wore
meant danger--for somebody.

They went out without further speech into the clear cold night. Henri,
as if from custom, threw his head back and scanned the sky. Then they
went on and crossed into the square.

"The plan," Henri began abruptly, "is this: You will be provided
to-morrow with a passport to Boulogne. You will, if you agree, take the
midnight train for Folkestone. At the railway station here you will
be searched. At Folkestone a board, sitting in an office on the quay,
will examine your passport."

"Does any one in Boulogne speak English?" Sara Lee inquired nervously.
Somehow that babel of French at the Savoy had frightened her. Her
little phrase book seemed pitifully inadequate for the great things
in her mind.

"That hardly matters," said Henri, smiling faintly. "Because I think