The ninth episode of Boston Blue, titled “Collateral Damage,” will be released on Friday, December 19, 2025. The show follows former NYPD detective Danny Reagan, played by Donnie Wahlberg, as he works with the Boston Police Department alongside his new partner, Lena Silver (Sonequa Martin-Green). This episode serves as the fall season’s final installment and is expected to lead into a mid-season break.
You can watch Boston Blue Episode 9 when it premieres on CBS at 10:00 PM Eastern Time (ET)/Pacific Time (PT). For viewers streaming the show, the episode will be available on Paramount+ shortly after the TV broadcast ends. Subscribers to the Paramount+ Premium plan can stream the episode live as it airs on CBS. Those with the Paramount+ Essential plan can usually watch new episodes on-demand the day after they air on television.
This guide provides the release schedule, streaming details, a recap of the previous episode, and the official story summary for the upcoming hour.
Release Date and Global Streaming Information
The next chapter of the Blue Bloods spinoff has a confirmed release date. Here is all the information you need to watch it.
- Episode Title: Collateral Damage
- Release Date: Friday, December 19, 2025
- TV Broadcast Time: 10:00 PM – 11:00 PM ET/PT on CBS
- Streaming Platform: Paramount+
- Streaming Availability:
- Paramount+ Premium: Available for live streaming as it airs on CBS and on-demand after the broadcast.
- Paramount+ Essential: Available on-demand the day after the episode airs on CBS.
Note on Future Availability: CBS has indicated a programming break is likely after this episode, potentially due to the Winter Olympics. New episodes may not return until late February 2026.
Recap of Boston Blue Episode 8: ‘In the Name of the Father, and of the Son…’
The previous episode set the stage for significant personal and professional conflicts. Detective partners Danny Reagan and Lena Silver investigated a robbery that turned into a murder. The case became deeply personal when they discovered the victim’s wife, Evelyn, had conspired with a former boyfriend to kill her husband. The investigation tested Lena’s judgment and highlighted the painful reality of betrayal from someone close.
The episode also focused on tensions within the Boston PD. Rookie officers Sean Reagan (Mika Amonsen) and Jonah Silver (Marcus Scribner) arrested a fire captain for drunk driving, causing a major conflict with the Boston Fire Department. Their own captain pressured them to drop the charges for political reasons, a situation that frustrated many viewers. As one fan noted online, turning a blind eye to such dangerous behavior “meant putting the public in danger”.
Sarah Silver (Maggie Lawson) stepped in to resolve the conflict. She advocated for the fire captain to face charges not as punishment, but to ensure he received necessary rehabilitation. Meanwhile, family dynamics were strained during a tense dinner. Mae Silver (Gloria Reuben), the Boston District Attorney, confronted difficult truths from her past when her father revealed a long-hidden family tragedy.
What to Expect in Episode 9: ‘Collateral Damage’
The official synopsis for Episode 9 promises high stakes for the entire Silver and Reagan family. The past comes back with a vengeance, threatening to break fragile bonds.
The summary states:
“Mae faces public and family backlash over the consequences of her past decisions, while Sarah struggles with guilt that pushes her to take risks in pursuit of justice. At the same time, Lena and Danny dive into a tense homicide case, and Jonah’s anger over his father’s death threatens to unravel fragile family ties.”
Mae Silver will be in the spotlight, dealing with fallout from old cases or choices. The backlash affects both her public reputation and her relationships at home. Her daughter, Lena, and partner, Danny, will be pulled into a new, tense homicide investigation.
For Sarah Silver, a strong sense of guilt over a past event will drive her to make riskier decisions in her work. The episode will also explore Jonah Silver’s ongoing grief and anger over the death of his father, a police officer killed in the line of duty. This emotional turmoil could lead him to act out, further straining his connection with his family and his partner, Sean Reagan.
Main Cast for Episode 9
The episode will feature the show’s core cast, including:
- Donnie Wahlberg as Danny Reagan
- Sonequa Martin-Green as Lena Silver
- Gloria Reuben as Mae Silver
- Maggie Lawson as Sarah Silver
- Ernie Hudson as Reverend Edwin Peters
- Mika Amonsen as Sean Reagan
- Marcus Scribner as Jonah Silver
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