Boston Blue Episode 9: Release date news, time, streaming details and more

Boston Blue Episode 9 is set to drop on December 19, 2025.

The show is a spinoff of Blue Bloods, which stars Donnie Wahlberg. Episode 9 is titled Collateral Damage. It will first air on CBS. After the TV broadcast ends, the episode will be available on Paramount+ shortly after.

Boston Blue Episode 9 keeps the same mix of crime and family drama. Mae Silver faces backlash. People are angry about her past choices. Her family is upset, too.

Sarah Silver feels guilty. Her guilt pushes her to take bigger risks. Meanwhile, Danny Reagan works with Lena Silver again. They investigate a tense murder case. The case exposes deep family problems. Both the Silver and Reagan families are affected.

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Streaming details of Boston Blue Episode 9

Mark your calendars for December 19, 2025. That’s when Boston Blue Episode 9 will drop on Friday at 10 p.m. Eastern, on CBS.

Once it’s done airing on TV, the episode pops up on Paramount+. If you have the Premium plan, you get to watch it live. Essential folks might have to wait till the next day, depending on where you are and what subscription you have.

Want it as it happens? Flip on CBS at the right time, or go to whatever live TV streamer actually carries CBS. If you want to stream the episode, just wait for Paramount+ to drop it.

If you are cool with watching everything with ads, Paramount+ will run you $7.99 a month. If you want to pay for the whole year, that’s about $60.

Now, if you don’t want commercials, Paramount+ Premium plan ditches most ads, throws in the whole SHOWTIME catalog, lets you stream local CBS live, and even lets you download to watch offline. That one comes in at $12.99 a month. Or, you can pay about $120 for the year.

Heads up, though: Paramount+ is hiking prices starting January 15, 2026. Both plans are going up by a buck each. So, Essential jumps to $8.99/month, and Premium hits $13.99/month.

These are the main characters expected in Boston Blue Episode 9. This is based on official casting and episode listings.

Danny Reagan (Donnie Wahlberg): He is a former NYPD officer. He now works as a Boston PD detective. He is at the center of the series.

Lena Silver (Sonequa Martin-Green): She is Danny’s partner. She is also a key member of the Silver family.

Mae Silver (Gloria Reuben): She is Boston’s District Attorney. She is the head of the Silver family. Her past choices affect the Boston Blue Episode 9 story.

Sarah Silver (Maggie Lawson): She is a Boston PD Superintendent. Her guilt and conscience are important in this episode.

Edwin “Rev.” Peters (Ernie Hudson): He is the Silver family’s pastor. He supports the family during hard times.

Sean Reagan (Mika Amonsen): He is Danny’s son. He is also a Boston PD officer. He is part of the family drama.

Jonah Silver (Marcus Scribner): He is Mae’s son. He is a rookie police officer. His grief and emotions play a role in the story.

These characters form the main group in Boston Blue Episode 9.

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What to expect from Boston Blue Episode 9?

As per the Plex TV, the logline reads:

“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.”

Here’s what we think will happen in Boston Blue Episode 9, just going by the chaos so far:

There has to be a new murder, or maybe the same old one is about to blow up in everyone’s faces. Danny and Lena will be in this together, running around chasing leads, grilling suspects, and gathering evidence. This one is expected to feel more dangerous than usual. Don’t be surprised if their work-life balance goes up in flames with risky interviews, forensics, and more.

Meanwhile, Mae is expected to be in the hot seat in Boston Blue Episode 9. She will be catching heat in public, probably at some press conference or in court, and people will raise questions about her old decisions. Something from past cases is coming back to bite her, and it’s not just the public; her family will be feeling the ripples. We can expect some screaming with Sarah, maybe a side of drama with Lena or Jonah.

Sarah, on the other hand, is running on pure guilt. She is not letting up, not even close. She will probably chase down something reckless, something that’s going to make the whole department be upset with her.

And then there’s Jonah. He is falling apart, still reeling from his dad’s death, and if you have seen the promos, you know he is about to unravel even more in Boston Blue Episode 9. He will probably do something stupid, either at work or after hours, maybe pick a fight with Sean or Lena.

This family is headed for an emotional wreck, so buckle up.