For the first time the woman’s eyes fell. She could not divine what I was up to. Somehow she felt herself being pushed into a position, but she could not foresee where it would terminate.

“I don’t see the need,” she blurted out at length.

“But the authorities at Broadmoor did. That is why they sent them with you, you know. Believe me, you will incur a very grave responsibility if you don’t let them do their duty now that I have pointed out how extremely important it is that they should. Suppose Miss Velasquon grew dangerous, for instance, and sprang out of the carriage window on to the metals before you could lift a hand to stop her, what would the railway people say, the asylum authorities, the police, the coroner? Why, I should hurry forward to give evidence against you, madam, and you would be convicted of nothing less than manslaughter by neglect.” And to add irritation to my words I broke into a low mocking laugh, while poor Camille Velasquon, who knew I was up to some trick, but couldn’t see what it was, gave way to a fit of tears.

“Yours is a pretty picture,” the woman snapped, and now she looked more evil than ever, “but it’s too melodramatic for my taste. Just get out of this carriage yourself, then I can manage the patient all right. If anything happens it will be your fault, not mine.”

“I am not so sure about that,” I retorted blithely. “But am I to understand you decline my suggestion? If so, I can only say you have told me an untruth for some purpose of your own, which it will be my duty to ferret out. I can tell you openly that you have no warders with you.”

“I have.”

“Produce them.”

“I can.”

“Produce them,” I replied, and I made a movement as though I would signal to some porters who were standing near and would call upon them to judge between me and herself.

The ruse succeeded. With a muttered curse the woman placed a small silver whistle to her lips and blew thereon a curious signal, rather low, but very penetrating and distinctive. The next moment she was answered. Two women in the uniform of hospital nurses appeared suddenly at the window, and, obeying a sign from their superior, they sprang into the carriage and took seats, one on one side of, and the other opposite to, Camille Velasquon, who, now fearing that I had muddled everything, began to cry in sober earnest.