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The Best Episodes of Blue Lights

Every episode of Blue Lights ranked from best to worst. Let's dive into the Best Episodes of Blue Lights!

Binge this in 20h 36m•Peaking at 8.8/10

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
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Seasons4

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Episode Rankings

  1. #1 Fan Favorite
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    Blue Lights Season 3 Episode 5 - Ordo ab Chao
    8.8/10(584 votes)

    S3:E5

    Grace and Sean bring in George for questioning, leading Morgan to take drastic measures to silence him. Shane faces an unexpected situation on a routine call-out.

    Director:Unknown
    Writer:Unknown

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  2. Blue Lights Season 1 Episode 5 - The Q Word
    8.7/10(873 votes)

    S1:E5

    Mo’s side deal goes ahead, risking his relationship with his father. Tommy’s firearms exam is brought forward, and Stevie tries to convince Grace to come back to work.

    Director:Gilles Bannier
    Writers:Adam Patterson, Declan Lawn

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  3. Blue Lights Season 3 Episode 6 - World of Our Own
    8.7/10(671 votes)

    S3:E6

    Grace and Sean are under serious threat, while Lindsay's testimony exposes the Ginleys. Colly takes a risk to go after Morgan, and Fogerty decides Tina is no longer useful.

    Director:Unknown
    Writer:Unknown

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  4. Blue Lights Season 1 Episode 6 - Love The One You're With
    8.5/10(859 votes)

    S1:E6

    The team work together after the shooting. Stevie clashes with the spooks, Mo learns the truth about his father, and Grace accepts that she might break her promise to Angela.

    Director:Gilles Bannier
    Writers:Adam Patterson, Declan Lawn

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  5. Blue Lights Season 2 Episode 6 - The Loyal
    8.5/10(662 votes)

    S2:E6

    Mount Eden descends into chaos as Grace tries to get Henry out from under Lee’s control. Happy finally learns the truth.

    Director:Unknown
    Writer:Unknown

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  6. Blue Lights Season 1 Episode 4 - Full Moon Fever
    8.3/10(834 votes)

    S1:E4

    The police ombudsman investigates the team after a disastrous night shift. Helen uncovers a scandal, while a crisis at home has Grace doubting her career choice.

    Director:Gilles Bannier
    Writers:Adam Patterson, Fran Harris, Declan Lawn

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    The 20 WORST Episodes of Blue Lights

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  7. Blue Lights Season 2 Episode 5 - Where I Want to Be
    8.3/10(556 votes)

    S2:E5

    Annie’s job is on the line. As Lee consolidates power, Stevie and Grace are thrown back together on a response call, with terrible consequences.

    Director:Unknown
    Writer:Unknown

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  8. Blue Lights Season 3 Episode 2 - Skipper
    8.3/10(525 votes)

    S3:E2

    A car crash has traumatic consequences for Aisling, while the fallout creates a deadly situation for the section. Grace turns to child protection to try and help Lindsay.

    Director:Unknown
    Writer:Unknown

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  9. Blue Lights Season 3 Episode 4 - The Parting Glass
    8.2/10(517 votes)

    S3:E4

    Grace offers up a secret about her own past in an attempt to connect to Lindsay. Aisling’s erratic behaviour forces Tommy to make a heartbreaking decision.

    Director:Unknown
    Writer:Unknown

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  10. Blue Lights Season 4 Episode 3 - Everybody Knows
    8.2/10(133 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

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  11. Blue Lights Season 2 Episode 3 - Love Knows
    8.0/10(578 votes)

    S2:E3

    As tensions grow in Mount Eden, a response call forces Stevie to confront his past. Annie deals with the consequences of an impulsive decision.

    Director:Unknown
    Writer:Unknown

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  12. Blue Lights Season 2 Episode 4 - The Stamp of Nature
    8.0/10(559 votes)

    S2:E4

    Lee is the new boss in Mount Eden. Under pressure from Canning to get results, Shane leads Tommy into danger.

    Director:Unknown
    Writer:Unknown

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  13. Blue Lights Season 4 Episode 4 - So Far
    8.0/10(174 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

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  14. Blue Lights Season 1 Episode 3 - The Fear
    7.9/10(786 votes)

    S1:E3

    A paramilitary-style assault case has Grace determined to bring the McIntyres to their knees. When Gordy pulls away from Angela, she becomes desperate for help.

    Director:Gilles Bannier
    Writer:Fran Harris

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  15. Blue Lights Season 2 Episode 2 - Iceberg
    7.9/10(587 votes)

    S2:E2

    A loyalist gangland feud turns up the pressure on the section. Annie makes an impetuous decision on a night out.

    Director:Unknown
    Writer:Unknown

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  16. Blue Lights Season 3 Episode 3 - The Bird
    7.9/10(489 votes)

    S3:E3

    Grace and Shane push boundaries for Lindsay’s sake as a threat closes in. Aisling and Tommy respond to a call-out where things are not as they seem, with unexpected consequences.

    Director:Unknown
    Writer:Unknown

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  17. Blue Lights Season 2 Episode 1 - This Too Shall Pass
    7.8/10(683 votes)

    S2:E1

    A year into the job, the team are faced with a drug-fuelled crime wave that leads them into a loyalist estate. A violent clash puts Stevie and Grace’s working relationship at risk.

    Director:Unknown
    Writer:Unknown

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  18. Blue Lights Season 3 Episode 1 - The Party
    7.8/10(577 votes)

    S3:E1

    The arrest of young drug dealer Sandy McKnight begins to expose a criminal conspiracy involving every level of Belfast’s society, from wealthy businesswoman Dana Morgan to vulnerable teenager Lindsay Singleton.

    Director:Jack Casey
    Writer:Unknown

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  19. Blue Lights Season 1 Episode 2 - Bad Batch
    7.7/10(817 votes)

    S1:E2

    The team scramble to deal with a bad batch of drugs while the McIntyres try to cover their tracks. Annie receives terrifying news that has her wondering who she can trust.

    Director:Gilles Bannier
    Writers:Adam Patterson, Declan Lawn

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  20. Blue Lights Season 1 Episode 1 - The Code
    7.6/10(1013 votes)

    S1:E1

    PSNI probationer Grace promises to help Angela, whose son has fallen in with a notorious gang. But with undercover agents watching, will she be able to keep her word?

    Director:Gilles Bannier
    Writers:Adam Patterson, Declan Lawn

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  21. Blue Lights Season 4 Episode 2 - Numbers
    7.6/10(142 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

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  22. Blue Lights Season 4 Episode 1 - Eyes
    7.3/10(210 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

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Best Episodes Summary

"Ordo ab Chao" is the best rated episode of "Blue Lights". It scored 8.8/10 based on 584 votes. Directed by Unknown and written by Unknown, it aired on 10/27/2025. This episode scored 0.1 points higher than the second highest rated, "The Q Word".