Alix paused, and carefully re-threaded her needle. She, who had never acted in her life, rivalled the greatest actress in the world at this moment. She was actually living the part of the cold-blooded poisoner.

‘It was very peaceful. I sat watching him. Once he gasped a little and asked for air. I opened the window. Then he said he could not move from his chair. Presently he died.’

She stopped, smiling. It was a quarter to nine. Surely they would come soon.

‘How much,’ said Gerald, ‘was the insurance money?’

‘About two thousand pounds. I speculated with it, and lost it. I went back to my office work. But I never meant to remain there long. Then I met another man. I had stuck to my maiden name at the office. He didn’t know I had been married before. He was a younger man, rather good-looking, and quite well-off. We were married quietly in Sussex. He didn’t want to insure his life, but of course he made a will in my favour. He liked me to make his coffee myself just as my first husband had done.’

Alix smiled reflectively, and added simply, ‘I make very good coffee.’

Then she went on:

‘I had several friends in the village where we were living. They were very sorry for me, with my husband dying suddenly of heart failure one evening after dinner. I didn’t quite like the doctor. I don’t think he suspected me, but he was certainly very surprised at my husband’s sudden death. I don’t quite know why I drifted back to the office again. Habit, I suppose. My second husband left about four thousand pounds. I didn’t speculate with it this time; I invested it. Then, you see—’

But she was interrupted. Gerald Martin, his face suffused with blood, half-choking, was pointing a shaking forefinger at her.

‘The coffee—my God! the coffee!’

She stared at him.

‘I understand now why it was bitter. You devil! You’ve been up to your tricks again.’

His hands gripped the arms of his chair. He was ready to spring upon her.

‘You’ve poisoned me.’

Alix had retreated from him to the fireplace. Now, terrified, she opened her lips to deny—and then paused. In another minute he would spring upon her. She summoned all her strength. Her eyes held his steamy, compellingly.

‘Yes,’ she said. ‘I poisoned you. Already the poison is working. At this minute you can’t move from your chair—you can’t move—’

If she could keep him there—even a few minutes . . .

Ah! what was that? Footsteps on the road. The creak of the gate. Then footsteps on the path outside. The outer door opening.

‘You can’t move,’ she said again.

Then she slipped past him and fled headlong from the room to fall fainting into Dick Windyford’s arms.

‘My God! Alix,’ he cried.

Then he turned to the man with him, a tall stalwart figure in policeman’s uniform.

‘Go and see what’s been happening in that room.’