The year is 1949. "Sawyer Finn is the perfect candidate for the Company. But he isn't prepared for a life in the shadows. Jenny Nicolay has been lied to her entire life. Now she's ready for answers. Following the bombshell ending of their last case, the detectives travel to Boston in the fall of 1949 to confront Jenny’s past and prove her innocence.
When old family secrets converge, an angry Irish mob puts a price on their heads. Can the detectives go undercover and turn the tables? Or will infiltrating the mobsters destroy more than their budding romance?"