Brain Twister is a science fiction novel by Randal Garrett and Laurence M. Janifer. In the not too distant future, Ken Malone, young but promising FBI agent, is given the most important and difficult assignment of his career: find a spy who is stealing information from the Ultra Top Absolute Secret project to develop a non-rocket space ship at Yucca Flats Labs in Nevada. But this is not a normal spy, this spy laughs at the FBI and all attempts to find him or her because they use an unknown new method to steal the information directly from the minds of the scientists. And then of course, there is the Sweet Little Old Lady who is immortal and the stunning nurse and the Las Vegas gangsters and ... well, you had better listen to the story to find out the details. His first problem: how do you find a telepath to catch the first telepath?
Randall Garrett (December 16, 1927 – December 31, 1987) was an American science fiction and fantasy author. He was a contributor to Astounding and other science fiction magazines of the 1950s and 1960s. He instructed Robert Silverberg in the techniques of selling large quantities of action-adventure science fiction, and collaborated with him on two novels about men from Earth disrupting a peaceful agrarian civilization on an alien planet.