Belcovitch stopped talking and swore. It was a polysyllabic curse, very effective. Then the steel gate was flung open, and in three languages Mr. Belcovitch demanded of the silence an account of what was happening. His voice ran away into a hollow echo, and died miserably.

Jane heard him stamp back into the chamber, cursing, and return. This time he flashed a light before him. Flattened against the wall, Jane saw its glow reflected from the side of the passage in which she was. Belcovitch had seen the sherds and was exclaiming and muttering. She heard him pass the arch.

Jane stole to the mouth of the slanting passage. Belcovitch was two yards away on her left, flashing his light down the tunnel, seeing more broken pots, and more and more, and swearing all the time, not loudly but with considerable earnestness. Jane slipped like a shadow across behind him and round the corner. The steel gate was wide open. She ran through it and into the lighted laboratory.

Henry lay on the stone floor in front of her, bound hand and foot. He had rolled over on to his side and was staring at the gate. Raymond had risen to her feet, and was taking a half-step towards Henry as Jane came running in.

“Shut the gate,” said Henry in a sharp whisper.

“There’s another way out, and I don’t think they know it. Quick, Jane, quick!”

Jane slammed the gate. She had the pruning-knife in her hand, and she was down on her knees and at work on the black silk muffler before the sound of the slam reached Mr. Belcovitch. When it did reach him he spun round and came back at a run with a revolver in his hand and murderous fury in his heart.

Jane cut through the last shred of silk, and because Belcovitch’s hand was shaking with rage his first bullet missed her and Henry handsomely.

“Get up against the wall, quick!” Henry commanded.

As he spoke he was himself half rolling, half scrambling towards the wall. His ankles were still tied, but his arms were free. The second bullet just missed his head. Jane cried out, and then they were both out of the line of fire. Henry was breathing hard.