HE custom which had grown upon my part of meeting Thorndyke at the station on the occasion of his visits was duly honoured on the present occasion, for the surprising discoveries in Black Boy-lane, which I had described in my report to him, made me eager to hear his comments. Unfortunately, on this occasion, he had come down by an unusually late train, and the opportunity for discussion was limited to the time occupied by the short walk from Rochester Station to my house. For it was close upon dinner time, and I rather expected to find Bundy awaiting us.
"Your report was quite a thrilling document," he remarked, as we came out of the station approach. "These new discoveries seem to launch us on a fresh phase of the investigation."
"Do they seem to you to offer any intelligible suggestions?" I asked.
"There is no lack of suggestions," he replied. "To a person of ordinary powers of imagination, a number of hypotheses must present themselves. But, of course, the first thing to consider is not what might have happened, but what did happen, and what we can safely infer from those happenings. We can apparently take it as proved that the body was carried through the lane; and everything goes to show that it was carried from the river towards the town. The first clear inference is that we can completely exclude accident, pure and simple. The body—living or dead—may be assumed to have been carried by some person or persons. We can dismiss the idea that the woman walked up the lane. But if someone carried the body, someone is definitely implicated. The affair comes unquestionably into the category of crime."
"That doesn't carry us very far," I said, with a sense of disappointment.
"It carries us a stage farther than our previous data did, for it excludes accident, which they did not. Then it suggests not only premeditation, but arrangement. If the body was brought up from the river, there must have been some place known to, and probably prepared by, those who brought it, in which it could be deposited; and that place must have been more secure than the river from which it was brought. But the river, itself, was a very secure hiding-place, especially if the body had been sunk with weights. Now, this is all very remarkable. If you consider the extraordinary procedure; the seizure of the victim at Chatham; the conveyance of the body from thence to this considerable distance; the landing of it at the wharf; the conveyance of it by an apparently selected route—at enormous risk of discovery, in spite of the fog to an appointed destination: I say, Strangeways, that if you consider this astounding procedure, you cannot fail to be convinced that there was some definite purpose behind it."
"Yes," I agreed, "that seems to be so. But what could the purpose be? It appears perfectly incomprehensible. It only makes the mystery more unsolvable than ever."
"Not at all," he rejoined. "There is nothing so hopeless to investigate as the perfectly obvious and common-place. As soon as an apparently incomprehensible motive appears, we are within sight of a solution. There may be innumerable explanations of a common-place action; but an outrageously unreasonable action; pursued with definite and considered purpose, can admit of but one or two. The action, with its underlying purpose, must be adjusted to some unusual conditions. We have only to consider to what conditions it could be adjusted, and which, if any, of those conditions actually exist, and the explanation of the apparently incomprehensible action comes into view. But here we are at our destination, and there is our friend, Bundy, standing on the doorstep. By the way, I have brought one or two photographs of Mrs. Frood for you to look at."
We arrived in time to intervene and put an end to a preliminary skirmish between the irrepressible Bundy and Mrs. Dunk, and when greetings had been exchanged, Thorndyke went up to his room to wash and deposit his luggage.
"Well, John," said Bundy, when he had hung up his hat, "it is very pleasant to see my old friend after this long separation. Very good of him, too, to invite an insignificant outsider like me to meet his distinguished colleague. You are a benefactor to me, John."
"Don't talk nonsense, Peterkin," said I. "You know we are always glad to see you. I invite you for my own pleasure and Thorndyke's, not for yours."
Bundy gave my arm a grateful squeeze. "Good old John," said he. "Nothing like doing it handsomely. But here is the great man himself," he added, as Thorndyke entered the dining-room, carrying a cardboard box, "with instruments of magic. He's going to do a conjuring trick."