Boston Blue 1x19 "Chasing Monsters" Season 1 Episode 19 Promo Trailer HD - A deadly threat strikes close to home, pulling Lena, Danny and the team into an intense investigation; Mae faces a political and personal reckoning, prompting a revelation that pushes Lena toward a life-changing decision. <br />» Watch Boston Blue Fridays at 10pm on CBS<br />» Starring: Donnie Wahlberg, Ernie Hudson, Sonequa Martin-Green <br />#BostonBlue
