She leaned out into the gangway between the two rows of tables, and caught the passing waiter by the end of one his coat-tails. The little Italian looked round with an expression of surprise that deepened into terror on his face.

"Half a pint of Guinness," ordered Miss Penny. "And, after this, bring me some jam roll."

"No jam roll to-day, madam."

"Damn!" said Miss Penny. "Bring me what you like, then."

She let go of the waiter's tail and resumed her narrative.

"Where was I? Yes, I remember. She came into my room, I was telling you, with a bucket of water and a brush, dressed like a charwoman. Naturally I was rather surprised. 'What on earth are you doing, Sister Agatha?' I asked. No answer. She just shook her head, and began to scrub the floor. When she'd finished, she left the room without so much as looking at me again. 'What's happened to Sister Agatha?' I asked my nurse when she next came in. 'Can't say.'—'Won't say,' I said. No answer. It took nearly a week to find out what really had happened. Nobody dared tell me; it was strengst verboten, as they used to say in the good old days. But I wormed it out in the long run. My nurse, the doctor, the charwomen—I got something out of all of them. I always get what I want in the end." Miss Penny laughed like a horse.

"I'm sure you do," I said politely.

"Much obliged," acknowledged Miss Penny. "But to proceed. My information came to me in fragmentary whispers. 'Sister Agatha ran away with a man.'—Dear me.—'One of the patients.'—You don't say so.—'A criminal out of the jail.'—The plot thickens.—'He ran away from her.'—It seems to grow thinner again.—'They brought her back here; she's been disgraced. There's been a funeral service for her in the chapel—coffin and all. She had to be present at it—her own funeral. She isn't a nun any more. She has to do charwoman's work now, the roughest in the hospital. She's not allowed to speak to anybody, and nobody's allowed to speak to her. She's regarded as dead.'" Miss Penny paused to signal to the harassed little Italian. "My small 'Guinness,'" she called out.

"Coming, coming," and the foreign voice cried "Guinness" down the lift, and from below another voice echoed, "Guinness."

"I filled in the details bit by bit. There was our hero, to begin with; I had to bring him into the picture, which was rather difficult, as I had never seen him. But I got a photograph of him. The police circulated one when he got away; I don't suppose they ever caught him." Miss Penny opened her bag. "Here it is," she said. "I always carry it about with me; it's become a superstition. For years, I remember, I used to carry a little bit of heather tied up with string. Beautiful, isn't it? There's a sort of Renaissance look about it, don't you think? He was half-Italian, you know."