"Knows he's cornered. He'll show fight as we go in on him. If there's more than one—" The bolt gave.

McGarrigle turned like a fury. "Clear the hall," he cried.

There was a confused movement. Obedient souls disappeared.

Clancy returned and reported the front room invisible from Mrs. Willing's side window, the shade of its own side window being down. In the bedroom and bath all lights out, but shades up and nothing stirring.

"Any hall?"

The superintendent replied in the negative.

"No fire-escapes, you say?"

"No. Fireproof building."

"They're right ahead of us, then."

Again, with a long shudder, the door gave.