"Asked a few questions about him," Runcorn said unhappily. "According to the men in the works, he'd gotten a bit eccentric. Scared stiff of tunnels and holes, so they said. Used to shake and go white as a ghost, break out in a sweat." He lifted one shoulder very slightly. "Happens to some people. Others it's heights, or spiders, or snakes. Whatever. Usually think of women being frightened of that sort of thing, but it doesn't have to be. Worked a case once with a woman who fainted at the sight of a mouse. Can't think why, but it doesn't have to have a reason. Knew another one terrified of birds, even a harmless little canary." He stopped. All the lines of his face sagged, making him look older, more tired than before. "He did seem obsessed with the dread of an accident, and as far as I could see, there was no reason for it."

"What did Mrs. Argyll think of her father in this?" Monk asked, remembering Jenny Argyll's stiff back and carefully controlled face.

"Blamed herself for not seeing how far his madness had gone," Runcorn answered, weariness and confusion in his eyes. "Said she would have had him better looked after if she'd known. Not that there was a thing she could've done, as her husband told her. As long as he breaks no laws-and Havilland didn't-a man's entitled to go as daft as he likes."

"And Mary?"

Runcorn sighed. "That's the thing. Poor girl refused to accept it. Determined her father was right and wouldn't let it rest. Started reading all his books, asking questions. Broke off her engagement to Toby Argyll and devoted herself to clearing her father's name. Wanted him buried in consecrated ground if it took her her life's work to do it." His voice sank even lower. "Now it looks as if the poor soul'll lie beside him. Do you know when they're going to do that, because-" He stopped abruptly and cleared his throat, then glared defensively at Monk as if challenging him to mock.

Monk had no desire to. In his mind's eye he could see again and again the figure of Mary tipping over the rail, clinging on to Toby Argyll, and the two of them plunging down into the icy river. He still did not know what had happened; nothing was clear, and he ended up not remembering but imagining, because he wanted her not to have done it herself.

And he remembered the strong bones and the gentle mouth of the white face they pulled out of the river, and that Mrs. Porter had said she was a woman of opinions and the courage to declare them.

"No, not yet. But I'll tell you when I do. Have to tell the butler, Card-man, as well."

Runcorn nodded, then looked away, his eyes too bright.

"You said you found where he bought the gun." Monk changed the subject.