"The Hour of Battle" — As one of the Guardian ships protecting Earth, the crew had a problem to solve. Just how do you protect a race from an enemy who can take over a man's mind without seeming effort or warning?
"Minds! These bastards are power-crazy. Seems they've hit all the systems around here, looking for someone to—"
"Yeh?"
"I've got that a bit wrong," Everset said pleasantly. "They are not so bad."