§ Of Beren and Lúthien The Silmarillion

Now Gorlim would have drawn back, but daunted by the eyes of Sauron he told at last all that he would know. Then Sauron laughed; and he mocked Gorlim, and revealed to him that he had only seen a phantom devised by wizardry to entrap him; for Eilinel was dead. 'Nonetheless I will grant thy prayer,' said Sauron; 'and thou shalt go to Eilinel, and be set free of my service.' Then he put him cruelly to death.