The Ming Vase and Other Science Fiction Stories — E.C. Tubb

Cartwright House is a secret government military project. The men and women living there have been given the best food, comfort, and recreational facilities. But they're prisoners, forbidden to leave and closely guarded. For these people have very special powers. And then one man does escape, and Special Agent Don Gregson of the CIA is delegated to find him--and quickly. This is just one of four great stories of the aliens living among us, including "Trojan Horse," "Agent," and "The Inevitable Conflict." First-rate SF tales by a master storyteller.