Piedmont bluesman Blind Blake is about to get a small sliver of the fame he always deserved. Fatefully, Lee Child’s signature hero, Jack Reacher, decides to swing through Margrave, Georgia, because he heard Blind Blake died there. That didn’t happen in real life, because Margrave is fictional. Regardless, a whole lot of dead bodies start piling up in the sleepy small town during showrunner Nick Santora’s “Reacher” (based on Child’s novel “The Killing Floor”). Rather inconveniently, Reacher (just “Reacher,” don’t call him Jack) came to town just when a murdered body is discovered. The linebacker-looking former military policeman definitely stands out, so he is arrested on suspicion. The Margrave police department breaks down into two camps. Chief Detective Oscar Finlay, who recently transferred from Boston is uptight, but honest and competent. Officer Roscoe Conklin (she does not look like her name) is also smart and trustworthy. The rest are basically …