Proto-Red Kryptonite story.
The original title of this story was "The Gorilla With X-Ray Eyes!" In the original, Professor Lang was incorrectly called Thaddeus in this story, but it was changed to Lewis in this reprint.
A note was added at the end: "SWIFTY DID BECOME SUPER AGAIN. DO YOU WANT THAT STORY REPRINTED?"
Letters from: Gary Skinner, Jim Morrison, Dennis Tait, Chris Duane, David Becker.