Was he transplanting all that from the past, and his own broken memory, into the present where it did not belong?

No. Katrina Harcus had come to him because she had overheard Dalgarno and Jarvis Baltimore talking of large and dangerous profits that must be kept secret, and she feared fraud. That was fact, nothing to do with memory, true or false, and very much in the present. As was Nolan Baltimore’s murder, whether it had anything to do with the railway or not.

The train pulled into Euston at last, and Monk got out and hurried along the platform, jostled by tired and impatient travelers.

The huge space beyond the platform, arched over by a magnificent roof, was filled with peddlers, people hurrying to catch outgoing trains, porters with boxes and cases, friends and relatives come to meet those arriving or to wish good-bye to those leaving. Coachmen looked for their masters or mistresses.

A paperboy was calling out the latest news. Hurrying past him, Monk heard something about the Union troops in America having captured Roanoke Island on the Kentucky border. The violence and tragedy of that war seemed very far away; the searing heat and dust and blood of the battle he and Hester had been caught up in were in another world now.

When at last he got home he found Hester asleep, curled over in the bed as if she had reached to touch him and found him not there. One arm was still outstretched.

He stood still for several moments, hesitating whether to waken her or not. The fact that she did not stir, unaware of him, told him how tired she must be. There were times when his own impulse would have woken her anyway. She would not have minded. She would have smiled and turned to him.

Now he resisted. What would he say to her? That he had found nothing in Derby except ghosts of familiarity that he could not place? That there was a crash in the past which was so terrible he could neither remember it nor forget it, and he dared not look at the reasons because he was afraid that they involved some kind of guilt, but he had no idea for what? And he had nothing yet that would help his client.

He turned away and went to wash, shave, and change into clean clothes. Hester was still asleep when he left to go to the Royal Botanic Gardens to meet with Katrina Harcus.

It was a bright, windy, March afternoon and a score of people had chosen to spend it admiring the early flowers, the vivid green of the grass, and the giant trees, still bare, wind gusting noisily through the branches. In spite of the brilliant light, the ladies had abandoned parasols. As it was, now and again both hands were needed to keep hats in place and skirts from being whipped and lifted above petticoats.

He saw Katrina after a moment. There was a distinction about her bearing which marked her out. Apparently she recognized him just as quickly and came over without any pretense that it was a casual meeting.

Her face was flushed, but that might have been the wind and sun rather than any expectation so soon.

“Mr. Monk!” She stopped in front of him breathlessly. “What have you learned?”

An elderly gentleman out walking alone turned and smiled at them indulgently, no doubt mistaking it for a lovers’ meeting. Another couple walking arm in arm nodded and moved even closer to each other.

“Very little, Miss Harcus,” he replied quietly. This was not a conversation he wished overheard.

Her eyes dropped and disappointment filled her face, too acute to be concealed.

“I have made enquiries about workmanship and materials,” he went on. “From what I have heard, the railway navvies are too skilled to use inadequate materials of any kind. Not only their reputations and future livelihood would depend on it, but their lives at the time. They have built railways all over the world, and there is no known example of a bad one anywhere.”

She lifted her eyes quickly to gaze into his face. “Then where is the secret profit coming from?” she demanded. “This is not enough, Mr. Monk! If the materials are good, then perhaps there was dishonesty in acquiring them?” She was watching him intently, her face burning with emotion. He realized again how deeply she was in love with Dalgarno, and how terribly afraid that he would be driven into crime and then ruined by it, not only morally but in every other way, perhaps even to end in prison like Arrol Dundas. Monk knew the bitterness of that only too well. It was one thing of which even his shattered memory had not completely let go.

He offered her his arm, and after only a moment’s hesitation she took it and they walked side by side between the flower beds.

“I haven’t looked closely at the possibility of land fraud yet,” he said, speaking quietly so passersby, strolling in the bright day, would not overhear him. He was aware of their curiosity, politely masked as courteous nods and smiles as they passed. He and Katrina must make a striking picture, both handsome people, elegantly dressed and obviously involved in a conversation of deep emotional content.

She kept her hand lightly on his arm, a delicate gesture, one of trust rather than familiarity. “Please look into it, Mr. Monk, I beg you,” she said urgently. “I am desperately afraid of what may happen if no one learns the truth before it is too late. We may be able to prevent not only the tragedy of an innocent man’s being implicated in a crime, but the loss of an untold number of people’s lives in the kind of disaster that only something like a rail crash could bring.”

“Why do you fear a crash, Miss Harcus?” he asked, frowning a little at her. “There is no reason whatever to think there is either faulty material or workmanship. If there is land fraud, then that is dishonest, certainly, but it does not cause accidents.”

She lowered her eyes and turned away until he could no longer see her face except in profile, and her hand slipped off his arm. When she spoke it was barely audible.

“I have not told you everything, Mr. Monk. I had hoped not to have to speak of this. I feel ashamed of having stopped on the landing and overheard a conversation below me in the hall. I tread very lightly, and I am not always heard. It is not intentional, simply a habit from childhood which my mother instilled in me: ’Ladies should move silently and with grace.’ “ She took a deep breath, and he saw that she blinked rapidly, as if to control tears.

“What did you overhear, Miss Harcus?” he asked gently, wishing he could offer her more comfort, even reach the unnamed grief inside her which was easy to guess. “I am sorry to insist, but I need to know if I am to look in the right places for the dishonesty you fear.”

She kept her eyes averted. “I overheard Jarvis Baltimore say to Michael that as long as no one discovered what they had done,” she said quietly, “then they would both be rich men, and there would be no accident this time to mar the profits, or if there were, no one would make the connection.” She swung back to face him, her skin white, her eyes brilliant, demanding. “Can it matter where an accident is? It is still human life, still people crushed beyond any kind of help. Please, Mr. Monk, if you have any skill or wit at all which can prevent this happening, do so, not just for my sake, or for Michael Dalgarno’s, whom God knows I would save from harm, but for the sake of those people who might be riding the train when it happens!”

He was cold inside, imagination of mangled bodies too vivid in his mind.

“I don’t see how land fraud could cause an accident, but I promise I will do everything I can to find out if there has been any theft or dishonesty of any kind in Baltimore and Sons,” he promised. He would have to for his own sake as much as hers. The knowledge of the Liverpool crash and the memory of Arrol Dundas were too violent to ignore. No one knew the cause of that carnage. Perhaps if he learned more about surveying, land purchase, the movement of money, he would see the connection. “I will tell you all I know,” he went on. “But do not expect an answer sooner than three or four days.”