"No, I never knew of that. I got in through the cellars of the Bell Inn. The passage leads right under your grounds. I suppose neither of you have the faintest idea how you came here, after the Monk caught you?" They shook their heads. "Then we shall just have to search till we find the way. I can take you back to the Bell easily enough, but it'll mean walking home from there, as I daren't get my car out of the garage for fear of rousing Wilkes or Spindle. And I should say you've had about enough for one night."

"No, we haven't, have we, Peter?" Margaret said. "I agree that we ought to find the way back to the library, but we're quite game to do what you want us to. You didn't come down here just to look for us, did you?"

"I didn't. I came to reconnoitre, and to find where the press is."

"Then before we try and find the way out let's get on with the reconnoitring," Margaret said briskly. "I don't Icel done-up at all now."

Michael looked at her uncertainly, but Peter clinched the matter. "I'm damned if I'll go meekly home at this stage!" he said. "I was right then? It is a printing press?"

"Yes, it's a press all right. I want to locate it first, and make sure how many ways there are of getting into it. I've found one, I think." He led the way out of the square cell, and they found themselves in a low, vaulted passage in which Peter could not stand fully upright.

Turning to the right Michael stopped in front of a stout door similar to the one they had come through, except that it boasted a lock. He tried it, but it did not open. "I think I'll go and get Jimmy Fripp," he said. "He's much cleverer at opening doors than I am, and we shall waste less time in the long run. You'd better come along too, just in case of accidents. Mind your heads." He went before them up the passage, his torch showing them the way. Once a rat stuttered off almost under their feet, but Margaret had gone through too much to be discomposed by a mere rodent.

As they proceeded down the passage the air became noticeably fresher, and the reason for this was soon made apparent, for they saw a square opening in the side of the passage. No light could be seen through it, but it was obviously a window. Peter stopped Michael to point to it. "Ventilation? But aren't we underground?"

"Yes, and that was one of my main difficulties - to find how this place, if it really did exist - was ventilated. Not very easy with all you suspicious people on the watch. Remember that night you saw me, Marg — Miss Fortescue?"

"Margaret will do," she said. "Yes. Were you looking for it then?"