She would not let herself believe it was Cubby or any other member of Falco’s gang. They had been cruel to Dick Hartwell. Horace could expect no mercy from them. In her thoughts Judy could hear what they had said to each other all over again. Edith Cubberling’s threat to quit the gang meant nothing unless she could take the treasure with her. “Maybe I’d like to wear some of those precious rubies and diamonds,” she had said.

Could Lorraine’s ruby be in the collection? In spite of her cold and discomfort, Judy found herself still trying to solve her friend’s problem. It kept her from thinking about her own. But if the ruby had been stolen, why was Lorraine afraid to say so? Was it because of some ugly threat to her life or the life of someone she loved? Arthur, for instance. But that didn’t make sense, either. She’d called Arthur a cheat. His name had been forged. Judy mustn’t forget that. It might be a clue to the whole mystery.

“I’ll tell Peter. He’ll figure it out. Oh, why doesn’t he come? I need help. I can’t move without feeling chilly all over. If only someone would bring me my coat!”

Judy tried to think where she had left it, and suddenly it all came back to her. The coat she needed so much was back there under the fountain, covering Dick Hartwell. All at once she thought of the diamond she had found. She had tied it in the corner of her handkerchief and put it in her coat pocket. Was it still there? Judy didn’t care any more. She almost wished she had never found it in the first place.

“A frozen tear!” she thought, “and now I’m nearly frozen! Where is Blackberry?” The warmth of the cat’s soft fur would be some comfort even if he hadn’t delivered their message. But perhaps he had! The tower hadn’t been mentioned. Whoever came in answer to Horace’s SOS would hurry right to the fountain.

“It will be safe now. Falco didn’t turn it back on! I did one thing,” Judy told herself. “I kept them from turning that valve. They threatened me on purpose to make me afraid of them, but they’re the ones who have the most to fear. I’ll be all right in a minute, and then I’ll follow them and see who that man was.”

The minute passed. Another followed it and then another. More shadows passed by the door, but when Judy opened her mouth to call to them nothing came out, not even a hoarse croak.

“I’ll have to get outside where Peter can see me,” she decided. She was so used to having him come when she needed him that she couldn’t believe her helplessness now. There was no pain in her bruised foot, but she simply could not stand on it no matter how bravely she tried. Suddenly she was seized with a violent chill. It was all she could do to drag herself from the gloomy tower out into the sunshine.

The day was sunny but cold. It was the penetrating cold of early December. Judy’s wet clothing had started to freeze while she was still in the tower. Now it felt as if she were encased in ice like a mummy.

“This can’t be happening to me,” she thought.