As Ross and his chum were about to leave the quarterdeck, the Commander strode by.
"Pass the word for the master-at-arms," he ordered. "Master-at-arms went below, sir, to release the prisoners," reported a petty officer.
"By Jove!" whispered Ross. "I'd clean forgotten Ramblethorne. I wonder how he liked the business?"
"Let's wait," suggested Vernon.
They took up their position on the leeward side of the after 7.5-inch gun-shield. Here they were sheltered from the wind and out of sight of the alert Commander, although they could hear what was being said.
"Master-at-arms is in the sick-bay, sir," reported the messenger as he came up at the double. "He's nearly done for, trying to get to the prisoners. The ship's corporal managed to release the two ordinary seamen, but the spy's done in, sir—I mean he's drownded."
Almost immediately following the explosion, the master-at-arms had hurried to the cells. The flat was in darkness. The sentry on No. 6 post, in charge of the prisoners, was lying stunned on the floor of the passage. Water was surging aft. Already it was up to the knees of the master-at-arms as he plunged through the gloom towards his goal.
The three prisoners were shouting in mad panic. They realized their awful peril. Caged like rats in a trap, they felt certain that the cruiser was foundering, and that they would be carried down in a living tomb until the pressure of water burst open the comparatively strong steel walls of the cell.
At length the chief of the ship's police forced the door of the nearmost cell. By sheer good luck he inserted the key into the lock without having to fumble for the opening. The prisoner, a young seaman who had broken out of the ship at Halifax, was too terrified to know his way to safety. He clutched at the master-at-arms, following him to the next cell.
The water was now waist-deep. In trying to find the keyhole the master-at-arms dropped the keys. It took some minutes to find them—a loss of valuable time.