“History” – A body found on the Boston wharf pulls Lena and Danny into a tense drug investigation alongside Lena’s former partner, Detective Brian Rodgers (Ryan Broussard), sparking personal and professional friction. Jonah and Sean chase down a missing man tied to a scavenger hunt, while Sarah and Mae navigate emotional challenges at home and in court, on BOSTON BLUE, Friday, Oct. 31 (10:00-11:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+ (live and on-demand for Paramount+ subscribers, or on-demand for Paramount+ Essential subscribers the day after the episode airs)*.