This spring, author Brian Lebeau will release his debut novel, “A Disturbing Nature” (May 10, 2022, Books Fluent), a psychological and insightful thriller about a prolific killer and investigator in post-Vietnam War-era New England. When FBI Chief Investigator Francis Palmer and Maurice Lumen’s paths collide, a dozen young women are already dead—bodies strewn in the woods across southern New England. …