About two o'clock in the morning Mimika was wakened by a guttural choking cry from her husband. She was so startled that she slipped out of bed and stood staring at him. The moon was flooding the room almost like a searchlight, and Captain Vandermeer lay in the full stream of it. While she watched him he rose slowly to a sitting posture, with his eyes still shut and his hands clenched above his face. He began muttering to himself, in a low voice at first, and then so loudly that it echoed through the house; and the words sounded more like German than Dutch. Then he began fighting for breath, like a man in a nightmare. He tore his pyjama jacket open over the great red hairy chest. "Otto!" he shouted at the top of his voice. "Otto!" Then with a huge sigh he sank back on the pillows, whispering "I have opened it." There was a tap on the door. Mimika snatched up a dressing gown, the first garment she could lay her hands on--it happened to be Vandermeer's--wrapped it round her, glided across the room and opened the door. Her brother stood there, also in a dressing gown and bare-footed. Their eyes met without a word. He took her hand, led her outside and closed the door quietly behind them. "You heard him, Roy?" she whispered. "Come downstairs," he said. "I want to ask you some questions about this." They went down to the den at the back of the house, and stood there looking at each other's faces. "He told us a tale to-night," said Roy at last. "Yes," said Mimika faintly. "Do you know what he was calling out in his nightmare?" "It sounded like German," she said. "Yes, it was German; and it gave me a good deal more local color than I expected. That was a true story all right, Mimika." "You mean that he--" "Yes." "Oh, but, Roy!" "That's his dressing gown you're wearing, isn't it?" "Yes, I picked it up in a hurry." "There's been too much hurry about everything, I'm afraid. Why the devil did I go to Europe! Here, Mimika, take off that thing and put mine on. I don't like to see you in it. It doesn't suit you, little sister." She obeyed him, with a small white frightened face; but it was not the white of powder now. Roy thrust his hand into the pocket of Vandermeer's dressing gown. Something jingled. He pulled out a bunch of keys. "Vandermeer told me I was good at following up a clue. I'm going to follow one now, Mimika," he said. "This is the key of the safe." He opened the safe, looked hastily at the bundles of papers and then pulled out the chamois leather bag. "Look here, Mimika!" he said and poured a glittering river of diamonds, several hundred of them, on to the table. The moonlight played over them with an uncanny brilliance. "That's his Landsturm," said Roy; "and that settles it." He took Mimika's hand, and she made no protest as he withdrew the wedding ring from her finger and added it to the glittering heap on the table.