"Well… now," said the culprit in question.

"But what's this," asked Ricky insistently, "about a train running through Grandmother's bedroom?"

At the same moment, in a hall touched by sunshine through the open door to the terrace, Ruth Callice and Stannard appeared at that door, followed by Chief Inspector Masters. Martin, like the skeleton, almost gibbered as he explained while the others gathered round.

"Jenny?" He turned back to the "phone.

"Yes, dear?"

"How long has this uproar been going on? Why didn't you ring me?"

"But I only discovered it myself," Jenny protested, "about twenty minutes ago. Before I left you last night, you see, H.M. gave me two nembutal sleeping-pills; he got them from Dr. Laurier; and he made me promise to take them as soon as I got home. And I was so worried about you—"

Martin kept the receiver a little way back from his ear. Jenny's small, soft voice was distinctly audible to everyone who had gathered round.

"So," repeated Martin, "H.M. gave you some sleeping-pills, so you wouldn't know. Yes, I remember he said he did."

Sir Henry Merrivale, wearing an incredible air of righteousness, had folded his arms and stood like a statue in a park.