While Betty Winter was still brooding in angry resentment over the problem of John Vaughan's guilt in sharing the treason of his Chief, the army was suddenly swung into the field to contest Lee's invasion of Maryland. The daring venture of the Confederate leader had developed with startling rapidity. The President was elated over the probable annihilation of his army. He knew that half of them were practically barefooted and in rags. He also knew that McClellan outnumbered Lee and Jackson two to one and that the Southerners, no longer on the defensive, but aggressors, would be at an enormous disadvantage in Maryland territory. That Lee was walking into a death trap he was morally sure. The Confederate leader was not blind to the dangers of his undertaking. Conditions in the South practically forced the step. It was of the utmost importance that he should have full and accurate information before his move, and a group of the coolest and bravest young men in his army were called on to go into Washington as scouts and spies and bring this report. Men who knew the city were needed. Among the ten selected for the important mission was Ned Vaughan. He had been promoted for gallantry on the field at Malvern Hill, and wore the stripes of a lieutenant. He begged for the privilege of risking his life in this work and his Colonel could not deny him. He had proven on two occasions his skill on secret work as a scout before the second battle of Bull Run. His wide circle of friends in Washington and the utter change in his personal appearance by the growth of a beard made his chances of success the best of any man in the group. He was anxious to render his country the greatest possible service in such a crisis, but there was another motive of resistless power. He was mad to see Betty Winter. He knew her too well to believe that if he took his life in his hand to look into her eyes she could betray him. His disguise in the uniform of a Federal Captain was perfect, his forged pass beyond suspicion. He passed the lines of the Union army unchallenged and spent his first night in Washington in Joe Hall's famous gambling saloon on Pennsylvania Avenue. He arrived too late to make any attempt to see Betty. He stood for half an hour on the corner of the street, gazing with wistful eyes at the light in her window. He dared not call and involve her in the possibility of suspicion. He must wait with caution until she left the house and he could speak to her without being recognized. If he failed to get this chance he would write her as a last resort. In Hall's place he found scores of Congressmen and men from every department of the Government service. Old Thaddeus Stevens, the leader of the war party in the House, was playing for heavy stakes, his sullen hard face set with grim determination.