He gave three short rings, a long one and three more short. The door was almost immediately opened by a nervous-looking maid.

"Okay, Bessie, it's Miss Avery's sister."

Patricia walked straight in, just as the Saint might have done, and her complete assurance gave the maid no chance to reply. A moment later, in the artistically lighted living room, she was face to face with Beatrice Avery.

"I'm quite harmless, and I hope you'll forgive me for getting in by a trick, Miss Avery," she said directly. She opened her bag and produced a card. "This will tell you who I am — and perhaps you'll guess why I'm here."

The film star's frightened eyes looked up from the card.

"Yes, I've heard your name," she whispered. "You work with the Saint, don't you? Sit down, please, Miss Holm. I don't know why you've come. I told Mr Templar over the phone that it was all a silly joke—"

"And I'm here because the Saint didn't believe you," Patricia interrupted gently. "If you've heard of him you must know that you can trust him. Simon thinks that something ought to be done about the Z-Man, and he's the one man in all the world to do it."

Beatrice Avery's breasts stirred shakily under her clinging satin negligee, and her grey eyes grew obstinate — with the dreadful obstinacy of utter fear.

"It's all very absurd, Miss Holm," she said, trying to speak carelessly. "There's no such person as the Z-Man. How did Mr Templar know… I mean, there's nothing I can tell you."

"You'd rather pay ten thousand pounds—"