“But we haven’t had lunch yet!” Geraldine protested. Conyers suddenly made his appearance in the gangway, followed by Olive. “What’s the message, Howard?” he inquired. The officer saluted and handed over a folded piece of paper. Conyers read it with a frown and stepped at once out on to the deck. He gave a few orders, then he turned back to his guests. “Gels,” he explained, “and you, Granet, I’m frightfully sorry but I can’t keep you here another second. I have ordered the pinnace round. You must get on shore and have lunch at the ‘Ship.’ I’ll come along as soon as I can. Frightfully sorry, Granet, but I needn’t apologise to you, need I? War’s war, you know and this is a matter of urgency.” “You’re not going out this tide?” Geraldine demanded breathlessly. Conyers shook his head. “It isn’t that,” he replied. “We’ve got some engineers coming over to do some work on deck, and I’ve had a private tip from my chief to clear out any guests I may have on board.” “Is it anything to do with this wonderful screened-up thing?” Olive asked, strolling towards the framework-covered edifice. Conyers shrugged his shoulders. “Can’t disclose Government secrets! Between just us four--our friend Thomson isn’t here, is he?” he added, smiling,--“we are planning a little Hell for the submarines.” They glanced curiously at the mysterious erection. Granet sighed. “Secretive chaps, you sailors,” he observed. “Never mind, I have a pal in the Admiralty who gives me a few hints now and then. I shall go and pump him.” “Don’t you breathe a word about having been board the _Scorpion,_” Conyers begged quickly. “They wink at it down here, so long as it’s done discreetly, but it’s positively against the rules, you know.” “Righto!” Granet agreed. “There isn’t a soul I’m likely to mention it to.” “I’ll come over to the ‘Ship’ as soon as I can get away,” Conyers promised. They raced across the mile of broken water to the landing-stage. They were all a little silent. Olive was frankly disappointed, Geraldine was busy with her thoughts. Granet’s gaze seemed rivetted upon the _Scorpion._ Another pinnace had drawn up alongside and a little company of men were boarding her. “I only hope that they really have hit upon a device to rid the sea of these cursed submarines!” he remarked, as they made their way across the dock. “I see the brutes have taken to sinking fishing boats now.” “Ralph believes that they have got something,” Olive declared eagerly. “He is simply aching to get to work.” “Sailors are all so jolly sanguine,” Granet reminded her. “They are doing something pretty useful with nets, of course, in the way your brother was beginning to explain to me when Major Thomson chipped in, but they could only keep a fixed channel clear in that way. What they really need is some way of tackling them when they are under water. Here we are at last. I hope you girls are as hungry as I am.”