"From this plan, Dr. Pellery, it appears that the west tower, a square tower, of St. Lawrence immediately faces the back of the Moot Hall. And between the outer wall of the tower and the outer wall of the Moot Hall there is a sort of connecting wall----"

"Not a sort of," interrupted Dr. Pellery. "It is a connecting wall, thirty-six feet long, ten feet high, and eight feet in width, forming an arch over the street beneath--the narrow street called St. Lawrence Lane."

"It is an uncommon feature, that wall?" suggested Meeking.

"Comparatively--yes. I know of other places where ancient buildings are so joined. But there are few examples."

"Well, I want to ask you a very important question about that connecting wall. Is there a secret way through that wall from St. Lawrence tower to the Moot Hall?"

Dr. Pellery drew himself up, stroked his beard, and glanced round the court. Then he gave Meeking an emphatic nod.

"There is! And I discovered it--years ago. And I have always thought that I was the only living person who knew of it!"

Meeking let this answer soak into the mentality of his hearers. Then he said quietly:

"Will you tell us all about it, Dr. Pellery?"

"Enough for your purpose," replied the witness. "You have there, I believe, a sectional drawing of the tower--give it to me. Now," he continued, holding up a sheet of stout paper and ill.u.s.trating his remarks with the tip of his forefinger, "I will show you what I mean.

St. Lawrence tower is eighty feet in height. It is divided into three sections. The lower section, the most considerable of the three, forms a western porch to the church itself, which is entered from it by a Norman arch. Above this is the middle section; above that the upper section, wherein are three ancient bells. The middle and upper sections are reached from the lower by a newel stair, set in the south-west angle of the tower. Now the middle section has for many centuries been a beamed and panelled chamber, from which the bells are rung, and wherein are stored a good many old things belonging to the church--chiefly in ancient chests. During the years that I lived in Hathelsborough I spent a great deal of time in this chamber--the then vicar of St. Lawrence, Mr. Goodbody, allowed me to examine anything I found stored there--it was amongst the muniments and registers of St. Lawrence, indeed, that I discovered a great deal of valuable information about the history of the town. Well, I have just said that this chamber, this middle section of the tower, is panelled; it is panelled from the oak flooring to within two feet of the oak beams in its ceiling, and the panelling, though it is probably four hundred years old, is in an excellent state of preservation. Now, about the middle of the last year that I spent in this town, I began to be very puzzled about the connecting wall between St. Lawrence tower and the Moot Hall. I saw no reason for making an arch at that point, and the wall had certainly not been built as a support, for the masonry of the tower and of the hall is unusually solid. I got the idea that that wall had originally been built as a means of communication between tower and hall; that it was hollow, and that there at each extremity there was a secret means of entrance and exit. I knew from experience that this sort of thing was common in Hathelsborough; the older part of the town is a veritable rabbit-warren! There is scarcely a house in the market-place, for instance, in which there is not a double staircase, the inner one being very cleverly concealed, and I know of several secret ways and pa.s.sages, entered, say, on one side of a street and terminating far off on another. There is a secret underground way beneath the market-square which is entered at the Barbican in the Castle and terminates in St. Faith's chapel in St.

Hathelswide's church; there is another, also underground, from St.

Matthias's Hospital to the G.o.d's House in Cripple Lane. There are others--as I say, the old town is honeycombed. So there would be, of course, nothing unusual or remarkable in the presence of a secret pa.s.sage between St. Lawrence tower and the Moot Hall. The only thing was that there was no record of any such pa.s.sage through the connecting wall; no one had ever heard of it; and there were no signs of entrance to it either in the tower or in the Moot Hall. However, I discovered it--by careful and patient investigation of the panelling in the chamber I have mentioned. The panelling is divided, on each wall of the chamber, into seven compartments; the fourth compartment on the outer wall slides back, and gives access to a pa.s.sage cut through the arch across St.

Lawrence Lane and so to the Moot Hall."

"There's one man here who knows all this!" whispered Tansley in Brent's ear. "Look at Krevin Crood!"

Krevin was smiling. There was something unusually cynical in his smile, but it conveyed more than cynical amus.e.m.e.nt to Brent. There was in it the suggestion of a.s.surance--Krevin, decided Brent, had something up his sleeve.

But the other people present were still intent on the old antiquary.

Having come to the end of his explanation he was pa.s.sing back the chart to Meeking, and seemed satisfied with what he had said. Meeking, however, wanted more.

"To the Moot Hall!" he repeated. "Well, Dr. Pellery, and where does this pa.s.sage emerge in the Moot Hall?"

"Just so," said Dr. Pellery. "That, of course, is important. Well, the wall or arch between St. Lawrence tower and the Moot Hall, on reaching the outer wall of the latter, is continued within, from that outer wall along the right-hand side of the corridor off which the extremely ancient chamber known as the Mayor's Parlour is situated. If close examination is made of that wall you will find that it is eight feet thick. But it is not a solid wall. The secret pa.s.sage I have mentioned runs through it, to a point half-way along the length of the Mayor's Parlour. And access to the Mayor's Parlour is had by a secret door in the old panelling of that chamber--just as in the case of the chamber in the church tower."

"You investigated all this yourself, Dr. Pellery?"

"Discovered and investigated it."

"And kept the secret to yourself?"

"I did. I saw no reason for communicating it to anyone."

"However, as you discovered it, it was not impossible that others should make the same discovery?"

"It is very evident that somebody has discovered it!" replied the witness with emphasis.

"Now, you say that it is about twenty years since you made this discovery. Have you been in St. Lawrence tower since?"

"Yes. Superintendent Hawthwaite has been in communication with me--privately--about this matter for some little time. I came to Hathelsborough yesterday, and in the afternoon he and I visited the tower and I showed him the secret way and the doors in the panelling. We pa.s.sed from the tower into the Mayor's Parlour--as you or anyone may, just now, if you know the secret of the sliding panels."

"Is it what you would call a difficult secret?"

"Not a bit of it--once you have hit on the exact spot at which to exert a pressure. The panels are then moved back quite easily."

"Your evidence, then, Dr. Pellery, comes to this--there is a secret pa.s.sage through the apparently solid arch in St. Lawrence Lane which leads direct from the middle chamber in St. Lawrence tower to the Mayor's Parlour in the Moot Hall? Is that correct?"

Dr. Pellery made an old-fashioned bow.

"That is absolutely correct!"

"I am sure the court is greatly obliged to you, sir," said Meeking, responding to the old man's courtesy. He looked round, and seeing that Stedman made no sign, glanced at the policeman who stood by the witness-box. "Call Stephen Spizey!" he commanded.

Spizey moved ponderously into the box in all the glory of his time-honoured livery. He looked very big, and very consequential, and unusually glum. Meeking, who was not a Hathelsborough man, glanced quizzingly at Spizey's grandeur and at the c.o.c.ked hat which Spizey placed on the ledge before him.

"Er--you're some sort of a Corporation official, aren't you, Spizey?" he suggested.

"Apparitor to his Worshipful the Mayor of Hathelsborough," responded Spizey in his richest tones. "Mace-bearer to his Worship. Town Crier.

Bellman. Steward of the Pound. Steward of High Cross and Low Cross.

Summoner of Thursday Market. Convener of Sat.u.r.day Market. Receiver of Dues and Customs----"

"You appear to be a good deal of a pluralist," interrupted Meeking.

"However, are you caretaker of St. Lawrence church?"

"I am!"

"Do you live in a cottage at the corner of St. Lawrence churchyard?"

"I do!"

"Do you remember the evening on which Mr. Wallingford was murdered?"

"Yes."

"At seven o'clock of that evening were you in your cottage?"

"I was!"

"Did Mr. Krevin Crood come to your cottage door about seven o'clock and ask you for the keys of St. Lawrence?"

"He did!"

"Did he say why he wanted to go into the church?"

"Yes, to write out a hinscription for a London gent as wanted it."

"Did you give him the keys?"

"I did."