The Throg task 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. Eye-searing lances of energy lashed back and forth across the base with methodical accuracy. And a single cowering witness, flattened on a ledge in the heights above, knew that when the last of those yellow-red bolts fell, nothing human would be left alive down there. And so Shann Lantee, most menial of the Terrans attached to the camp on the planet Warlock, was left alone and weaponless in the strange, hostile world, the human prey of the aliens from space and the aliens on the ground alike.

Cover code #63821. This is a second printing (not stated, 1969), reprinting Ace F-325 (same cover art). Second book in the "Forerunner" series. Other novels in this sequence Storm Over Warlock (1960), Forerunner Foray (1973), Forerunner (1981) and The Second Venture (1985).

When a highly skilled sensitive comes into contact with a strange green stone, she finds herself trapped in the past in the identity of another person.

Of all the justly famous writers of science fiction and fantasy, none has inspired greater enthusiasm and loyalty than Andre Norton. Of all Ms. Norton's works, none has been more warmly received than her famed "Forerunner" series, a series whose heroes and heroines have already taken on the trappings of legend.

Norton, Andre, The Second Venture