"I mentioned a moment ago that I had tossed some of Vida Gervais' unusual face powder onto the diamonds stolen from Tauber's shop. The naphthionate in that powder would cling to the diamonds and subsequently cling to the hands of the criminal who eventually got hold of them. Watch now for the glowing hands of the killer--the man who has been impersonating the Eye ever since Carlson was killed. But one funny thing about that impersonation which I did not realize until tonight. The impersonator, this man who killed Biggert and Carlson, was most careful to avoid any word or name beginning with the letter 'D.' He would not, for instance, say the name 'Delancy,' nor would he speak the word 'diamonds.' Why? Because every time he says a word or name beginning with that letter, he stutters. He might disguise his voice by whispering, but he could not control this stutter, which would have been a dead give-away." * * * * * In the black light, luminous fingers suddenly showed themselves. There was a piercing scream. Men surged forward to close in and blot out the glow from the killer's fingers. "Watch out!" Black Hood's warning voice rang out. "He is probably armed!" Men bumped into each other. There was the repeated thud of blows. There were cries, grunts, stammered oaths. And when finally somebody turned on the lights, Jeff Weedham was on the floor, two cops astride him. He had a gun in his hand, but his hand was pinned to the floor. Sergeant McGinty looked over his shoulder at the Black Hood--or rather looked where he thought the Black Hood would be. McGinty's jaw sagged. He looked down at his own gun which was poking him in the ribs. His revolver had been wedged into the baby-gate extension arm of his own desk telephone. And Black Hood was gone. It was an hour later that McGinty and his men, by playing Vida Gervais and Jeff Weedham, one against the other, got a full confession which corresponded very closely to Black Hood's reconstruction of the crimes. Jeff Weedham had been placed in rather a desperate position by his father, Jeff explained. William Weedham had bought Jeff the newspaper, insisting that he make a financial success of it and thus prove his worth. If he failed in this as he had in everything else, William Weedham was determined that none of the Weedham fortune should fall into Jeff's hands. Jeff had run his newspaper into the red. As the time came closer in which William Weedham was to examine the newspaper's ledger, Jeff Weedham tried desperately to make up the lost money, first by forgery, and then by stepping into Carlson's shoes as the Eye. Ballistics tests proved that it was Jeff's gun which had killed both Biggert and Carlson. Just as McGinty was about to leave his office for the night, his phone rang. Almost before he picked the instrument up, he knew who his caller was.