the facts were known, suspicion could not fail to attach to Ralph—or, if not to him, to the girl he loved. That night I put the facts plainly before him. The thought of having possibly to give evidence which might incriminate his wife made him resolve at all costs to—to—”
I hesitated, and Ralph filled up the gap.
“To do a bunk,” he said graphically. “You see, Ursula left me to go back to the house. I thought it possible that she might have attempted to have another interview with my stepfather. He had already been very rude to her that afternoon. It occurred to me that he might have so insulted her—in such an unforgivable manner—that without knowing what she was doing—”
He stopped. Ursula released her hand from his, and stepped back.
“You thought that, Ralph! You actually thought that I might have done it?”
“Let us get back to the culpable conduct of Dr. Sheppard,” said Poirot drily. “ Dr. Sheppard consented to do what he could to help him. He was successful in hiding Captain Paton from the police.”
“Where?” asked Raymond. “In his own house?”
“Ah, no, indeed,” said Poirot. “You should ask yourself the question that I did. If the good doctor is concealing the young man, what place would he choose? It must necessarily be somewhere near at hand. I think of Cranchester. A hotel? No. Lodgings? Even more emphatically, no. Where, then? Ah! I have it. A nursing home. A home for the mentally unfit. I test my theory. I invent a nephew with mental trouble. I consult Mademoiselle Sheppard as to suitable homes. She gives me the names of two near Cranchester to which her brother has sent patients. I make inquiries. Yes, at one of them a patient was brought there by the doctor