The line between curiosity and obsession blurs in “Killer Instincts” as renowned author W.J. Constantine meticulously dissects infamous crimes. From the chilling efficiency of the Zodiac Killer to the monstrous depths of Ed Gein, Constantine relentlessly exposes the methods and madness behind these unforgettable cases. Prepare to confront the darkest aspects of human nature as you delve into the psyches of history’s most disturbing predators.