"But he planned the attack upon me," Graham protested. "He is an enemy--a German--sheltering himself under his American naturalization. Surely we're going for him?" "He's a wrong 'un, of course," Lutchester admitted, "but he hasn't got the formula." "But we must do something!" Graham continued, his anger rising as his strength returned. "Why, the place is a perfect den of conspirators! I expect Ferrani himself is in it, and there's that other maitre d'hotel, Jules, and those black beasts, Joseph and Hassan, besides Fischer. My God, they shall pay for this!" Lutchester nodded. "I dare say they will," he admitted, "but not quite in the way you are thinking of." Graham half rose to his feet. "Look here," he said, "I'm sane enough now, aren't I, and in my proper senses? You are not going to suggest that we don't turn the police on to that damned place?" "I certainly am," was the brief reply. Graham was aghast. "What do you mean to do, then?" "Leave them alone for the present. Not one of them has the formula. Not one of them even knows where it is." "But the attack upon me?" "You asked for all you got," Lutchester told him curtly, "and perhaps a little more." The first tinge of colour came back to Graham's cheeks. His eyes flashed with anger. "Perhaps I did," he admitted, "but that doesn't alter the fact that I'm going to have some of my own back out of them." Lutchester crossed his legs and turned round in his chair. For the first time he directly faced his visitor. His tone, though not unkindly, was imperative. "Young fellow," he said, "you'll have to listen to me about this." A smouldering sense of revolt suddenly found words. "Listen to you? What the devil have you got to do with it?" Graham demanded. "I hate to remind any one of an obligation," Lutchester answered, "but I am under the impression that, together with Miss Van Teyl, of course, I rescued you from an exceedingly inconvenient situation." "I haven't had time yet to tell you how grateful I am," Graham said awkwardly. "You were a brick, of course, and how you and Miss Van Teyl tumbled on to the whole thing I can't imagine. But I don't understand what you're getting at now. You can't suggest that I am to leave these fellows alone and not give information to the police?" "The character of the place," Lutchester assured him, "is already perfectly well known to the heads of the police. The matter will be dealt with, but not in the way you suggest. And so far as regards Fischer, I do not wish him interfered with for the present." "You do not wish him interfered with?" Graham repeated. "Where the devil do you come in at all?" "You can leave me out of the matter for the present. You want the formula back, don't you?" "My God, yes!" Graham muttered fervently. "It's all very well to give one a pencil and a piece of paper and say 'Write it out,' but there are calculations and proportions--"