"Amazing!" Charlton cried. "Why, these are my wife's diamonds, the real stones beyond doubt."

[CHAPTER XXVI.]

THE BLACK MOTOR.

A certain sense of elation had taken possession of Hetty. She had been tried in the fire, and she had not been found wanting. She had done her work well, and she knew it. And she was not quite satisfied. Things were going on here that she ought to know. At any moment she might come across important information that would be of the greatest use to Gordon. She no longer had the slightest doubt that the Countess was at the bottom of the business that threatened to deprive him of his good name.

As soon as the weakness was passed, she followed Leona Lalage. She heard the latter fumbling with the sash of the drawing-room window, she felt the sudden rush of air. The owner of the house had barely reached the garden before Hetty was after her. It was all for Gordon's sake, she told herself; for him she would do anything.

She crept on until the green door in the wall was reached. It was risky to peep out, but Hetty had to hazard that. The black motor car was in front of her, so that she was behind the gleaming lights. With a thrill Hetty recognized that motor. It was the same one that she had seen leaving the Corner House on the morning of the murder. She was destined to see more of it before long. But she saw other things; she saw Leona tear the skirt of her dress away; a wild cry of surprise rose to her lips, but she choked it down. Here before her was the Spanish woman of Gordon's story. The sudden flood of light set Hetty trembling from head to foot.

For the present she was not destined to obtain further information. The big gates of the courtyard of the Corner House was closed upon her. But she waited. Wit! Her little white teeth shut together; she would have waited there all night. She heard Lalage's sudden cry; she heard the muttered conversation that followed.

She was only just in time to get back behind the green gates when the Countess emerged again with something in her hand. Her head was held high, her eyes gleamed with triumph. Then the great black car shot noiselessly away, and Hetty crept back to the house.

She managed to gain her bedroom unseen, she stood with a fast-beating heart at the head of the landing listening. All the servants had gone to bed long ago, there were only one or two of the electrics burning.