Galactic cops get on the trail of interplanetary body-snatchers in John Brunner's brisk sci-fi outing The Repairmen of Cyclops.
John Brunner was a popular sci-fi writer of the 60s and 70s who I have never gotten into; and, in fact, I can think of two or three of his novels I have picked up and put down over the years without finishing. This was my first one of his I read all the way through, and I found it to be a serviceable yarn on one half of an Ace Double I snagged for a quarter.
I learned this was the last of a trilogy featuring these characters in various space exploits, though I didn't feel any confusion or loss from missing the others. Enough neat ideas, at a good clip, to make me think about revisiting some other Brunner.
Almost worth owning just for the cool orange 60s cover alone; google it and you'll see waht I mean.