福尔摩斯探案经典:《恐怖谷》第6章Part3

"And once again, if the thought of leaving a bicycle concealed outside had occurred to you, would it really have seemed worth doing when the dullest detective would naturally say this is an obvious blind, as the bicycle is the first thing which the fugitive needed in order to make his escape."
"I can conceive of no explanation."
"And yet there should be no combination of events for which the wit of man cannot conceive an explanation. Simply as a mental exercise, without any assertion that it is true, let me indicate a possible line of thought. It is, I admit, mere imagination; but how often is imagination the mother of truth?
"We will suppose that there was a guilty secret, a really shameful secret in the life of this man Douglas. This leads to his murder by someone who is, we will suppose, an avenger, someone from outside. This avenger, for some reason which I confess I am still at a loss to explain, took the dead man's wedding ring. The vendetta might conceivably date back to the man's first marriage, and the ring be taken for some such reason.
"Before this avenger got away, Barker and the wife had reached the room. The assassin convinced them that any attempt to arrest him would lead to the publication of some hideous scandal. They were converted to this idea, and preferred to let him go. For this purpose they probably lowered the bridge, which can be done quite noiselessly, and then raised it again. He made his escape, and for some reason thought that he could do so more safely on foot than on the bicycle. He therefore left his machine where it would not be discovered until he had got safely away. So far we are within the bounds of possibility, are we not?"
"Well, it is possible, no doubt," said I, with some reserve.
"We have to remember, Watson, that whatever occurred is certainly something very extraordinary. Well, now, to continue our supposititious case, the couple--not necessarily a guilty couple--realize after the murderer is gone that they have placed themselves in a position in which it may be difficult for them to prove that they did not themselves either do the deed or connive at it. They rapidly and rather clumsily met the situation. The mark was put by Barker's bloodstained slipper upon the windowsill to suggest how the fugitive got away. They obviously were the two who must have heard the sound of the gun; so they gave the alarm exactly as they would have done, but a good half hour after the event."
"And how do you propose to prove all this?"
"Well, if there were an outsider, he may be traced and taken. That would be the most effective of all proofs. But if not--well, the resources of science are far from being exhausted. I think that an evening alone in that study would help me much."
"An evening alone!"
"I propose to go up there presently. I have arranged it with the estimable Ames, who is by no means wholehearted about Barker. I shall sit in that room and see if its atmosphere brings me inspiration. I'm a believer in the genius loci. You smile, Friend Watson. Well, we shall see. By the way, you have that big umbrella of yours, have you not?"
"It is here."

“再说，假如丢下一辆藏在外边的自行车是你想出来的主意，难道这样做真有什么价值吗？即使最蠢的侦探也必然会说，这显然是故布疑阵，因为一个亡命徒为了逃跑，首要的东西就是自行车呀。”
“我想不出怎样才能解释了。”
“然而，就人类的智力而言，对于一系列相互关联的事件想不出解释来，这是不可能的事。我来指一条可能的思路吧，就当做是一次智力练习，且不管它对还是不对。我承认，这仅仅是一种想象，不过，想象不始终是真实之母吗？
“我们可以假定，道格拉斯这个人生活中确实有过犯罪的隐私，而且实在是可耻的隐私。这就使他遭到某人暗杀，我们设想凶手是个从外面来的仇人。出于某种我到目前还无法解释的原因，这个仇人取走了死者的结婚戒指。这种宿怨可以认为是他第一次结婚时造成的，而正因如此，才取走他的结婚戒指。
“在这个仇人逃跑以前，巴克和死者的妻子来到屋中。凶手使他们认识到，如果企图逮捕他，那么，一件耸人听闻的丑事就会被公诸于世。于是他们就改变了主意，情愿把他放走了。为了这个目的，他们完全可能无声无息地放下吊桥，然后再拉上去。凶手逃跑时，出于某种原因，认为步行比起自行车要安全得多。所以他把自行车丢到他安全逃走以后才可能被发现的地方。到此为止，我们只能认为这些推测是可能的，对不对？”
“对，毫无疑问，这是可能的，"我稍有保留地说。
“华生，我们一定要想到我们遇到的事无疑是极为特殊的。现在我们继续把我们想象的案情谈下去。这一对不一定是罪犯的人，在凶手逃离后，意识到自己处于一种嫌疑地位，他们既难说明自己没有动手行凶，又难证明不是纵容他人行凶。于是他们急急忙忙、笨手笨脚地应付这种情况。巴克用他沾了血迹的拖鞋在窗台上做了脚印，伪作凶手逃走的痕迹。他们显然是两个肯定听到枪声的人，所以在他们安排好了以后，才拉铃报警。不过这已经是案发后整整半个小时了。”
“你打算怎样证明所有这一切呢？”
“好，如果是一个外来人，那么他就有可能被追捕归案，这种证明当然是最有效不过了。但如果不是这样的话……嗯，科学的手段是无穷无尽的。我想，要是我能单独在书房呆一晚上，那对我会有很大帮助的。”
“独自一个人呆一晚上！”
“我打算现在就去那里。我已经和那个令人尊敬的管家艾姆斯商量过了，他决不是巴克的心腹。我要坐在那间屋里，看看室中的气氛是否能给我带来一些灵感。华生，我的朋友，你笑吧。我是笃信守护神的。好，走着瞧吧。顺便问你一下，你有一把大雨伞吧？带来了没有？”
“在这儿。”