Katherine got up. “I must rush,” she said. “I have only just time to catch my train. Monsieur Poirot⁠—”

“Yes, Mademoiselle.”

“It⁠—it mustn’t be much longer, you understand. I⁠—I can’t go on much longer.”

There was a break in her voice.

He patted her hand reassuringly.

“Courage, Mademoiselle, you must not fail now; the end is very near.”