Temple sat for half an hour thinking and planning. He was determined to make no mistakes that might imperil success. To that end he was trying to imagine, in advance, every difficulty and every emergency that might arise. At last he rose, took his hat, turned the lamp out, and left the room. "This is the very toughest bit of engineering," he reflected, "that ever I undertook. Well, so much the greater the credit if I succeed. But I don't care for the credit. I care only for Guilford Duncan in this case." XXIV BARBARA'S ANSWER When Duncan left his room on the evening of Temple's conference with Will Hallam, he passed down the stairs and into the Hallam offices, where he still had a little working den of his own, for use when he did not care to see the people who sought him at his law office. As he entered he found a little note upon his desk, and he recognized Barbara's small round hand in the superscription. Opening the envelope eagerly he read the few lines within: You may come for your answer whenever it is convenient--any evening, I mean, for I am at leisure only in the evenings. There is a great deal for me to tell you, and it is going to be very hard for me to tell it. But it is my duty, and I must do it, of course. I'm afraid it won't be a pleasant evening for either of us. There was no address, but Duncan observed with pleasure, as a hopeful sign, that the little missive was signed "Barbara." "She wouldn't have signed it in that informal way, with only her first name, if she meant to break off the acquaintance," he argued with himself. And yet the substance of the note was discouraging in the extreme, so that Guilford Duncan was a very apprehensive and unhappy man as he hurried to Barbara's home. He still held her note crushed in his hand as he entered the house, and he read it over twice while waiting for her to appear. For this time--the first in his acquaintance with her--Barbara kept him waiting. She had not meant to do that, but found it necessary because of her own agitation in anticipation of the grievous task that was hers to do. She must resolutely bring herself under control, she felt, before meeting this crisis. She even tried in vain to "think out" the first sentences that she must speak. Finding this impossible she gave it up at last, and with all of composure that she could command, she entered the parlor and stood face to face with Guilford Duncan. She could say no word as he stood looking eagerly into her eyes, as if questioning them. He, too, was silent for perhaps a minute, when at last, realizing the girl's distressing agitation, he gently took her hand, saying in his soft, winning voice: "You are not well. You must sit down." "Oh, it isn't that," she answered, as she seated herself bolt upright upon the least easy chair in the room. "It is what I must tell you." "What is it? I am waiting anxiously to hear."