The Throg force struck the Terran survey camp a few minutes after dawn, without warning, and with a deadly precision which argued that the aliens had fully reconnoitered and prepared that attack. A single cowering witness, flattened on a ledge in the heights above, know that nothing human could possibly be left alive. Thus, Shann Lantee, most menial of the Terrans attached to that camp, was left alone and weaponless in the strange hostile world. Human prey for the aliens from space. But they were not the greatest menace on Warlock.
Andre Alice Norton (1912-2005) was an American science fiction and fantasy author (with some works of historical fiction and contemporary fiction) under the noms de plume Andre Norton, Andrew North and Allen Weston. Norton published her first novel in 1934, and was the first woman to receive the Gandalf Grand Master Award from the World Science Fiction Society in 1977, and won the Damon Knight Memorial Grand Master Award from the Science Fiction and Fantasy Writers of America (SFWA) association in 1983.
Andre Norton. Wikipedia.