Time Thieves - Dean R. Koontz - 1972 Ace Double Paperback

Condition: Acceptable. Please see the images for more details Cover Art: David Plourde Blurb:  Also features Against Arcturus by Susan K. Putney! TIME THIEVES"Mr. Mullion," one of the triplets said, looming up twenty feet away as Pete followed the smooth railing. He stopped, his heart racing, but he felt a break in the rail as he did so. He edged forward a foot or two and felt around with his boot until he discovered a step. In a moment, blood pounding in his temples, he was halfway down toward the lower level, taking two risers at a time, no matter what the danger of a fall. He heard the mechanical man start after him as he set foot on the cement floor.AGAINST ARCTURUSIt's the story of an Earth activist who's tagged for a subversion mission on a small planet off in the galaxy a ways. Seems that when Earth got overpopulated, humans set out for other planets to colonize, and now those planets are rival factions. The Arcturans are humans, too, but an offshoot who's presently at war with