The Friendly Killers

A science fiction novel written in the late 1950s. The story revolves around Agent Mark Traynor, who is ensnared in a galactic conflict against an alien race known as the Kel, which has been infiltrating human defenses while masquerading as allies. As he races against time to uncover the truth behind the Kel's insidious plot, he grapples with a society that has been conditioned