Sonequa Martin-Green has joined the cast of 'Boston Blue,' CBS' upcoming spinoff of 'Blue Bloods.'

Get latest articles and stories on Entertainment at LatestLY. The actress will play the role of detective Lena Peters, the eldest daughter of a prominent law enforcement family, who is partnered with detective Danny Reagan played by actor Donnie Wahlberg in the series, as per the outlet. Entertainment News | Sonequa Martin-Green Joins Cast of 'Blue Bloods' Spin off 'Boston Blue'.