“Boston Strangler” (*** out of four) was a crackling suspense melodrama based on the true story of two female reporters (Keira Knightley and Carrie Coon) who investigated the brutal killings of the title murderer in 1960’s Boston and risked their careers and lives in showcasing the botched police work involved and took it upon themselves to track him down and end his reign of terror. Exceedingly well-crafted script in the vein of investigative news classics “All The President’s Men” and “Spotlight” and enhanced by stellar work by its two leads but stops just short of hitting the bullseye mark. Chris Cooper, Robert John Burke, and Alessandro Nivola round out the gripping supporting cast; one of film’s producers was Ridley Scott.