"You now know how the disaster happened. Let us not waste time and words in lamenting it. The evil is done, and you and I together must find the way to remedy it.
"What I have accomplished already, on my side, may be told in two words. Any hesitation I might have previously felt at trusting this delicate business in strangers' hands was at an end the moment I heard Robert's news. I went back at once to the city, and placed the whole matter confidentially before my lawyers. The conference was a long one, and when I left the office it was past the post hour, or I should have written to you on Monday instead of writing today. My interview with the lawyers was not very encouraging. They warn me plainly that serious difficulties stand in the way of our recovering the lost trace. But they have promised to do their best, and we have decided on the course to be taken, excepting one point on which we totally differ. I must tell you what this difference is; for, while business keeps me away from Thorpe Ambrose, you are the only person whom I can trust to put my convictions to the test.
"The lawyers are of opinion, then, that the woman has been aware from the first that I was watching her; that there is, consequently, no present hope of her being rash enough to appear personally at Thorpe Ambrose; that any mischief she may have it in contemplation to do will be done in the first instance by deputy; and that the only wise course for Allan's friends and guardians to take is to wait passively till events enlighten them. My own idea is diametrically opposed to this. After what has happened at the railway, I cannot deny that the woman must have discovered that I was watching her. But she has no reason to suppose that she has not succeeded in deceiving me; and I firmly believe she is bold enough to take us by surprise, and to win or force her way into Allan's confidence before we are prepared to prevent her.
"You and you only (while I am detained in London) can decide whether I am right or wrong--and you can do it in this way. Ascertain at once whether any woman who is a stranger in the neighborhood has appeared since Monday last at or near Thorpe Ambrose. If any such person has been observed (and nobody escapes observation in the country), take the first opportunity you can get of seeing her, and ask yourself if her face does or does not answer certain plain questions which I am now about to write down for you. You may depend on my accuracy. I saw the woman unveiled on more than one occasion, and the last time through an excellent glass.