“You’re quite the clever guesser, Isaac Bell.”

“It was quite guessable,” Bell replied. “There’s no reason to sink a hundred barges in the channel other than to block the shipment of coal.”

“But how did you know I intended to sink them?”

“I shadowed you, Mary. I followed you here. To this boat. I listened to you argue with those men.”

“But I looked behind me. I made sure I wasn’t followed. The Pinkertons are everywhere.”

Bell smiled and said gently, “I told you Van Dorns are different.”

“Sneakier?” she asked with the faintest of smiles back.

Bell took her hands, and when she did not resist he said, “Mary, you once told me that knowing what is right is not enough. If you know what’s right, you have to do right.”

“Who are you to judge what’s right?”

“I have eyes and I have ears. The marchers are stranded. Your brother was so discouraged that he was willing to fight their way out of McKeesport. It would be a bloodbath. These barges—your barges—can save them. We couldn’t even try this if you hadn’t gathered them all here.” He pointed out in the dark where the barges carpeted the river. “But I have to tell you that this is a far, far better use than what you intended.”

Mary Higgins turned to Bell again. “I hate to give it up. Hate to lose it. It was a good scheme, wasn’t it?”

“Good,” said Bell, “is not the first word that comes to mind. But it was very clever.”

“Let’s hope your scheme is as clever,” she replied.

“I am praying it is,” said Bell. “There are so many people.”

“I wish them luck.”

“Who is Mr. Claggart?”

The instant the words were out of Bell’s mouth, he knew he should have waited.

Mary stiffened. “Once a detective, always a detective?”

“I’m afraid I’m not ‘sneaky’ enough to be a good one.”

“You’ll get better at it very soon at the rate you’re practicing.” She pulled away from him.

There was no getting out of it now. Bell had to know if Claggart was Henry Clay, and there was one very quick way to find out. “Does he have yellow eyes?”

“Why do you ask?”

“Because if he does, he is using you.”

“Go to hell.”

That answered that, thought Bell. “Do you know that he happens to be a detective?”

“Good-bye, Isaac.” She stepped onto the ladder to the barge.

“His real name is Henry Clay,” said Bell. “He is a provocateur. He is instigating violence, setting labor against owners and owners against labor. And he is using you for his game. If you sank those barges, Clay would get exactly what he wants. Workers will be blamed.”

“It’s not his game.”

“What?”

Mary shook her head violently. “Nothing.”

Bell grabbed her arm. “What did you mean it’s not his game?”