"My glands!" the voice screamed. "The cosmic rays reacted on them--fed the essence of the cat into them--changed me into this monstrous being!" Trent stared at the rage-filled face. Felt the emotion that was sweeping through the creature. Felt a sudden compassion that was erased by the bestial look that came into the monster's eyes. And then it turned toward the chair where Fenwick sat. The doctor was looking at the creature, his eyes wide and terrified. "But what do you expect me to do for you, Gaddon? Why do you stand here threatening--" Fenwick's voice came hoarsely. "Why? You fool! Because there is so little time! I am changing! Even now my human instincts are nearly gone!... You're a gland specialist! There is something you can do--stop this change--stop it!" Fenwick shook his head slowly. "You're raving like a madman, Gaddon. I'm not a God--do you think I can change something that is beyond human understanding? If you'll only let me call in the authorities ..." A growl of rage left Gaddon's animal lips. "Authorities! So you can have me put in cage like a wild beast? So you and your medical experts can stand and watch me as you would a freak? You're a fool! You'll help me now! You'll do something--before it's too late! Do you hear me?" The creature advanced slowly upon the doctor, and the girl backed away to the far wall, fear mirrored in her eyes. Then Fred Trent stepped forward, his voice tense. "Hold on, Gaddon--of course the doctor will help you--_won't_ you, Fenwick?" There was an urgent emphasis in Trent's last words, and his eyes caught those of the surgeon's, and held them in a meaningful look. He couldn't say what he wanted to, but the message in his eyes was imparted to Fenwick, and the doctor suddenly nodded. "Yes--yes, of course ... But you'll have to remain quiet, Gaddon, and be patient a moment...." The creature stopped its advance upon Fenwick then. And a growl rumbled in Gaddon's animal throat. Then Fred watched as the doctor stepped swiftly to a table with instruments and hurriedly began to prepare a hypodermic. "I'll give you a special extract injection to start...." Fenwick explained as he worked. And Trent knew that the doctor was preparing an injection that would subdue the monster. That would enable them to call the police.... And the eyes of Gaddon watched the fingers of the surgeon prepare the hypodermic. And for a single moment the human part of Gaddon's monster mind relaxed its tenacious hold. * * * * * There was a rumble of raging thought deep within his twisted brain. It swept up, gripped the human element, and enveloped it. A hoarse mewing sound left the twisted lips as the mind became a single, bestial thing. And now it thought with a viciousness. It knew now that it was finally in control. That the full change had been completed. And it knew suddenly what it wanted.