"How you spoil that child," she said. "Hetty, take her away."
But Lawrence would not hear of anything of the kind. He would like to have his tea out in the garden if Hetty would fetch it for him. Hetty came back presently, and handed the tea to her uncle. He hardly dared to look at her, but a smile on her lips told him she had succeeded. As he left the house presently Hetty followed him out. She nodded significantly.
"What does it all mean?" she asked.
"That you shall know all in good time," Lawrence replied. "It's a pleasure to have you to do anything for one, Hetty. How quickly you took in my parable. It was rather paltry to talk over a child's head like that, but if ever there was a case when the end justifies the means this is one. Of course, you got it?"
"Of course I did. A tiny glass bottle with a tiny glass stopper."
She took it from her pocket and held it out. There were a few drops of amber-hued liquid inside. Hetty would have removed the stopper, but Lawrence grabbed it.
"Don't touch it," he exclaimed, "keep as far from it as possible. There is real danger here if you only knew it. And whatever you do, don't you go near a soul in the house till you have washed your hands with Sanitas or some pungent disinfectant of that kind. You must be very careful about this."
Hetty promised, wondering.
"Where did you get that key from?" she asked.
"Well, I borrowed the original and had a copy made," Lawrence confessed. "You see I was bound to have a copy, as I am going to return the little bottle as soon as I have more or less verified its history. Now I want you to get away after dinner and come as far as my chambers to meet Bruce."