Off Center / The Rithian Terror by Damon Knight

Paperback. Condition: Good+. 1965. Ace

The Rithian Terror:
The story is a psychological thriller that follows an Earth security officer in the future who is racing against time to locate an alien spy. First published in 1953, this is one of the first books to feature a surveillance drone.

Off Centre:
The room was quiet; the man in front of the mirror was the only living things there, and he was too horrified to utter a sound.

In the mirror, five faces stared back at him: one young and ruddy, which was his own, and four that did not belong in that place at all, for they were wrinkled, malevolent, small as crabapples and blue as smoke.