"Yes, we can have it analysed. Perhaps I ought to have handed it over to the police…. I didn't do it because while the thing's in doubt one can't bring a horrible accusation, particularly against a member of one's family. My father's own wife——!"

The butler nodded understandingly.

"I suppose I'll have to be leaving here in the morning, sir: I sha'n't be wanted after what has happened. But I don't like leaving you alone to handle things, sir."

"We'll all go too, Chalmers, my aunt and I and Miss Rowe, if she's fit to be moved. You will come with us to an hotel for the present. I'm not going to bed at all to-night, I'm going to keep watch over Miss Rowe. If her story is true, Sartorius may try to get at her again; she mustn't be left."

"I shall keep about, too, sir, to know what goes on in this house."

"Right, Chalmers, it's a good idea. By the way, we'll keep as much as we can from my aunt, there's no good alarming her. I'll go now and inquire about Miss Rowe."

"Je demands pardon, monsieur!"

He jumped as the sardonic voice of Aline sounded in his ear, and the woman, with a covert glance of mock-servility, hurried past him with the empty tray. There were both malice and triumph in her bearing. Whether she knew anything or not—and it seemed impossible that she could surmise their suspicions—her manner conveyed unmistakably that she knew her mistress had scored a victory. A sudden misgiving swept over Roger. Supposing the hideous affair to be true, was it not extremely doubtful that they would ever be able to prove it? Might they not go on to the end of their days not knowing?

He crossed the hall and went along the passage to Esther's room. As he gently opened the door an odour of drugs or disinfectants met his nostrils, giving him a sinking feeling he had often experienced as a small boy on entering a dentist's room.

The little doctor was bending over the bed. From the other side Miss Clifford raised a white and tired face. Roger felt suddenly oppressed by fear. What were they going to tell him? He motioned to his aunt, who came towards him and answered the question he was afraid to utter.