You have been

"You have been, if you will pardon my expressing the opinion," said Dr. Fall moodily, "just a little bit sentimental, Farrington."
The other turned on him with an oath.
"I want none of your opinions," he said gruffly. "You will never understand how I feel about this child. I took her from her dead father, who was one of my best friends, and I confess, that in the early days the thought of exploiting her fortune did occur to me. But as the years passed she grew towards me--a new and a beautiful influence in life, Fall. It was something that I had never had before, a factor which had never occurred in my stormy career. I grew to love the child, to love her more than I love money, and that is saying a lot. I wanted to do the right thing for her, and when my speculations were going wrong and I had to borrow from her fortune I never had any doubt but what I should be able to pay it back. When all the money went,"--his voice sank until it was little more than a whisper,--"and I realized that I had ruined the one human being in the world whom I loved, I took the step which of all my crimes I have most regretted. I sent George Doughton out of the way in order that I might scheme to marry Doris to the Tollington millionaire. For I knew the man we were seeking was Doughton. I killed him," he said defiantly, "for the sake of his son's wife. Oh, the irony of it!" He raised his hand with a harsh laugh. "The comedy of it! As to Poltavo," he went on more calmly, "I let him go because, as I say, I wanted him to further my object. That he failed, or that he was remiss, does not affect the argument. Doris is safely married," he mused; "if she does not love her husband now, she will love him in time. She respects Frank Doughton, and every day that passes will solidify that respect. I know Doris, and I know something of her secret thoughts and her secret wishes. She will forget me,"--his voice shook,--"please God she will forget me."
He changed the subject quickly.
"Have you heard from Poltavo this morning?"
"Nothing at all," said Fall; "he has been communicating with somebody or other, and the usual letters have been passing. Our man says that he has a big coup on, but upon that Poltavo has not informed us."
"If I thought he was going to play us false----"
"What would you do?" asked Fall quietly. "He is out of our hands now."
There was a little buzz in one corner of the room, and Fall turned his startled gaze upon the other.
"From the signal tower," he said. "I wonder what is wrong."
High above the house was one square solitary tower, in which, day and night, a watcher was stationed. Fall went to the telephone and took down the receiver. He spoke a few words and listened, then he hung up the receiver again and turned to Farrington.
"Poltavo is in Great Bradley," he said; "one of our men has seen him and signalled to the house."
"In Great Bradley!" Farrington's eyes narrowed. "What is he doing here?"
"What was his car doing here the other day," asked Fall, "when he kidnapped Frank Doughton? It was here to throw suspicion on us and take suspicion off himself, the most obvious thing in the world."