The Regan family continues to serve and protect the streets of New York in the fifth tumultuous season of Blue Bloods. Oldest son Danny (Donnie Wahlberg) works to convict a national felon as well as resolve a dangerous hostage situation. Erin (Bridget Moynahan) faces numerous challenges as she navigates the judicial system enduring the retrial of a woman she's already convicted, as well as enlisting the testimony of a protected mob informant. Meanwhile, Jamie's (Will Estes) desire to help lands him in a few troubling situations. No matter what difficulties they face, this is a squad that sticks together, protecting family before all else.