"It seems to me, Griffin," he said, to cover his wandering attention, "that your confederate would be in a difficult position."

"No one would know he was a confederate," said the Invisible Man, eagerly. And then suddenly, "Hush! What's that downstairs?"

"Nothing," said Kemp, and suddenly began to speak loud and fast. "I don't agree to this, Griffin," he said. "Understand me, I don't agree to this. Why dream of playing a game against the race? How can you hope to gain happiness? Don't be a lone wolf. Publish your results; take the world--take the nation at least--into your confidence. Think what you might do with a million helpers--"

The Invisible Man interrupted--arm extended. "There are footsteps coming upstairs," he said in a low voice.

"Nonsense," said Kemp.

"Let me see," said the Invisible Man, and advanced, arm extended, to the door.

And then things happened very swiftly. Kemp hesitated for a second and then moved to intercept him. The Invisible Man started and stood still. "Traitor!" cried the Voice, and suddenly the dressing-gown opened, and sitting down the Unseen began to disrobe. Kemp made three swift steps to the door, and forthwith the Invisible Man--his legs had vanished--sprang to his feet with a shout. Kemp flung the door open.

As it opened, there came a sound of hurrying feet downstairs and voices.

With a quick movement Kemp thrust the Invisible Man back, sprang aside, and slammed the door. The key was outside and ready. In another moment Griffin would have been alone in the belvedere study, a prisoner. Save for one little thing. The key had been slipped in hastily that morning. As Kemp slammed the door it fell noisily upon the carpet.

Kemp's face became white. He tried to grip the door handle with both hands. For a moment he stood lugging. Then the door gave six inches. But he got it closed again. The second time it was jerked a foot wide, and the dressing-gown came wedging itself into the opening. His throat was gripped by invisible fingers, and he left his hold on the handle to defend himself. He was forced back, tripped and pitched heavily into the corner of the landing. The empty dressing-gown was flung on the top of him.

Halfway up the staircase was Colonel Adye, the recipient of Kemp's letter, the chief of the Burdock police. He was staring aghast at the sudden appearance of Kemp, followed by the extraordinary sight of clothing tossing empty in the air. He saw Kemp felled, and struggling to his feet. He saw him rush forward, and go down again, felled like an ox.