Operation Terror is a science fiction novel by Murray Leinster first published in 1962.

An unidentified space ship lands in a Colorado lake. Equipped with a paralyzing ray weapon, the creatures begin taking human prisoners.

A lone land surveyor and a journalist are trapped inside the Army cordon, which is helpless against the mysterious enemy.

Can they stop the aliens before it is too late?

An exciting tale from the Golden Age of Science Fiction, Operation Terror will not fail to entertain and mystify. 

Murray Leinster (1896-1975) was a pen name of William Fitzgerald Jenkins, an award-winning American writer of science fiction and alternate history. He wrote and published over 1,500 short stories and articles, 14 movie scripts, and hundreds of radio scripts and television plays.