"I've known Arthur Surbonadier for six years," she said at last. "I went to Cambridge to take part in a charity show that was being got up by some of the undergraduates. They engaged me to play Desdemona. I was a novice, then, and very young. Arthur was good-looking in those days and he always had a charm for women. I don't expect you to understand that. He introduced me to Felix, but I hardly remembered Felix when we met again. He had never forgotten me, he says. Arthur was attracted to me. He introduced me to Jacob Saint, and through that I got a real start in my profession. We were both given parts in a Saint show that was produced at the end of the year. He was passionately in love with me. That doesn't begin to express it. He was completely and utterly absorbed as though, apart from me, he had no reality. I was fascinated and—and so it happened. He asked me over and over again to marry him, but I didn't want to get married, and I soon knew he was a rotter. He told me about all sorts of things he had done. He had a fantastic hatred of his uncle, and once, at Cambridge, he wrote an article that attributed all sorts of things to Saint. There was a case about it—I expect you remember—but Saint never thought Arthur had done it, because Arthur was so dependent on him. He told me all about that and his own vices. He still attracted me. Then I met Felix and——" She made a little gesture with her hands, a gesture that he might have recognised as one of her stage tricks.

"From that time onwards, I wanted to break off my relationship with Arthur. He terrified me, and he threatened to tell Felix about—all sorts of things." She paused, and a different note came into her voice. "Felix," she said, "was a different type. He belongs to another caste. In a funny sort of way he's intolerant. But—he's dreadfully honourable. If Arthur had told him! I was terrified. I began to write those letters, at the time I went to New York, but when I got back Arthur still dominated me. Yesterday—it seems years ago—he came to see me, and there was a scene. I thought I would try to frighten him and, after he left, I wrote that note."

"In which you said: 'If you don't promise to-night to let me go I'll put you out of it altogether.' "

"My God, I meant I'd tell Saint what he'd done—how he'd written that article!"

"He's been blackmailing Saint for years. Surely you knew that?"

She looked as if she were thunderstruck.

"Did you know?" asked Alleyn.

"No. He never told me that."

"I see," said Alleyn.