Captain Hardy stopped abruptly in his walk. The flush of hope crept into his cheek. "It's far-fetched," he said, "but it may be. It's the only chance we've got. Can we make it in time? Where's the Patrol, Lew?"

"Right there, sir; almost out of the Narrows."

"Quick, Henry. The wireless."

Henry rushed to the wireless room. Captain Hardy strode after him. The others followed. With eager, skilful fingers, Henry adjusted his instrument and began to flash out the call for the police-boat.

Almost at once he got an answer. As Henry wrote down the letters, Captain Hardy leaned over his shoulder, his eyes fastened on Henry's pencil.

"Tell them the secret service needs them at the landing at once, Henry. Tell them to hurry."

Then, while Henry was flashing his message into the night, Captain Hardy ran to the window to see what the Patrol would do. On and on it went, as though it had no intention of stopping, and cold beads of perspiration stood out on Captain Hardy's forehead, and he clasped and unclasped his hands in his excitement. On went the boat. Captain Hardy tore back to Henry's side.

"What do they say?" he demanded.

"They're coming, sir."

Again the captain stepped to the window. The little steamer was just beginning to turn.