Lola, for all her iron will, found her mind dealing with all sorts of possibilities as she dressed herself mechanically. It was not for nothing that Foyle had chosen that hour for his visit. The sudden summons at such an hour, amid unusual surroundings and the speculation as to what it would be for, had upset the woman's balance.

She was taken by the matron into the same room where Grell had been questioned an hour before. Foyle and Green sat at the table and, to her imagination, there was something of judges in their attitude. A chair had been placed at the other side of the table facing them, and the lights were so arranged that while

her face would be fully illuminated, theirs would remain in the shadow.

"Sit down, will you," said Foyle suavely, when the matron had gone, closing the door behind her. "We're sorry to trouble you at this hour, but matters of urgency have arisen."

She strove to read their faces as she seated herself, but the light baffled her. "I am quite at your disposal, Mr. Foyle," she said, hiding her uneasiness under an appearance of flippancy. "What do you want?"

The superintendent balanced a pen between his fingers. "Mr. Green has already explained that you are not under arrest," he said, in a quiet, cold voice. "We are detaining you. Whether you will be the subject of a grave charge depends upon your answers to the questions we shall put to you. You must clearly understand, however, that you are not bound to answer."

"That sounds serious," she laughed. "Go on, Mr. Foyle. Put your questions."

"Very well. Do you still deny that you visited Mr. Grell's house on the night that the murder took place? I think it fair to tell you that we have had statements both from Ivan Abramovitch and Mr. Grell that you were there."

He eyed her sternly. She made an expressive gesture with her white hands, and her rings sparkled in the electric light. "I'll not dispute it in the circumstances."

"You went there with Harry Goldenburg, your husband, in connection with a scheme of blackmail he had conceived. You were to get certain letters from him for Mr. Grell if you could?"