She was too quick and elusive for Jim Frobisher. She had something of Ariel in her conception—a delicate creature of fire and spirit and air. She was across the courtyard and out of sight in the street of Charles-Robert before he had quite realised that she was going. He turned doubtfully towards the library, where Ann Upcott stood in the doorway.

"I had better follow her," he said, reaching for his hat

Ann smiled and shook her head wisely.

"I shouldn't. I know Betty. She wants to be alone."

"Do you think so?"

"I am sure."

Jim twiddled his hat in his hands, not half as sure upon the point as she was. Ann watched him with a rather rueful smile for a little while. Then she shrugged her shoulders in a sudden exasperation.

"There is something you ought to do," she said. "You ought to let Monsieur Bex, Betty's notary here, know that the seals are to be broken this afternoon. He ought to be here. He was here when they were affixed. Besides, he has all the keys of Mrs. Harlowe's drawers and cupboards."

"That's true," Jim exclaimed. "I'll go at once."

Ann gave him Monsieur Bex's address in the Place Etienne Dolet, and from the window of the library watched him go upon his errand. She stood at the window for a long while after he had disappeared.