Blue Lights backdrop
Crime•Drama

The Best Episodes of Blue Lights Season 4

Every episode of Blue Lights Season 4 ranked from best to worst. Discover the Best Episodes of Blue Lights Season 4!

Binge this in 4h 49m•Peaking at 8.2/10

Follows rookie police officers working in Belfast, a city in which being a frontline response cop comes with unique pressures and dangers.

Airs on
BBC One
BestEpisodes
WorstEpisodes
BestSeasons
AllEpisodes

Seasons4

All1234

Episode Rankings

  1. #1 Fan Favorite
    Blue Lights Season 4 Episode 5 - Ghosts
    8.2/10(125 votes)

    S4:E5

    Sandra enlists help to expose Gerry’s secrets, while Tommy and Shane inch closer to exposing the drug pipeline.

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

  2. Blue Lights Season 4 Episode 3 - Everybody Knows
    8.1/10(151 votes)

    S4:E3

    As Gerry’s murder trial begins, Mo’s unstable mental health ignites a struggle between the state and justice. Shane has a tense stand-off with Lee.

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

  3. Blue Lights Season 4 Episode 4 - So Far
    8.0/10(217 votes)

    S4:E4

    Sandra reflects on a secret Gerry once shared with her and realises that she is in possession of volatile information.

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

  4. Blue Lights Season 4 Episode 2 - Numbers
    7.6/10(155 votes)

    S4:E2

    In the wake of the attack on Amira, Grace’s determination puts her in danger, while Mo spirals further with violent consequences.

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

  5. Blue Lights Season 4 Episode 1 - Eyes
    7.3/10(227 votes)

    S4:E1

    The section is challenged by escalating tensions at a community event, while the investigation into Dana Morgan’s drug partnership with Tina McIntyre falters.

    Director:Unknown
    Writer:Unknown

    Be the first to start the conversation for this episode

Season 4 Ratings Summary

"Ghosts" is the best rated episode of "Blue Lights" season 4. It scored 8.2/10 based on 125 votes. Directed by Unknown and written by Unknown, it aired on 10/27/2026. This episode is rated 0.1 points higher than the second-best, "Everybody Knows".