Blue Lights The Parting Glass (Season 3, Episode 4)
TV Episode | Crime, Drama, Thriller

Blue Lights

The Parting Glass (Season 3, Episode 4)

TV Episode | Crime, Drama, Thriller

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.

Creators

Declan Lawn (created by) | Adam Patterson (created by) | Louise Gallagher (created by) | Stephen Wright (created by)

Director

Angela Griffin (directed by)

Writers

Declan Lawn (written by) | Adam Patterson (written by)

Producer

Amanda Black (producer)

Composer

Eoin O'Callaghan (composer)

Cinematographer

Raymond Carlin (director of photography)

Editor

Kate McAuley

Casting Director

Georgia Simpson

Production Designer

Nicola Moroney

See all filmmakers & crew

Edit Released

Updated Sep 29, 2025

Release date

Dec 4, 2025 (United States)

Awards

Series awards

4 wins & 8 nominations

Contacts

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Cast	+ Add Cast
22 cast members

Name	Known for
Sian Brooke Grace Ellis Grace Ellis See fewer	Sherlock (2010)
Martin McCann Stevie Neil Stevie Neil See fewer	The Survivalist (2015)
Neil Keery McCloskey McCloskey See fewer	Blue Lights (2023)
Maria Connolly Bea Bea See fewer	Robot Overlords (2014)
Katherine Devlin Annie Conlon Annie Conlon See fewer	Vikings (2013)
Antoinette Morelli Bridie Conlon Bridie Conlon See fewer	Stand Off (2011)
Andi Osho Sandra Cliff Sandra Cliff See fewer	Blue Lights (2023)
Cathy Tyson Dana Morgan Dana Morgan See fewer	Mona Lisa (1986)
Abigail McGibbon Tina McIntyre Tina McIntyre See fewer	Blue Lights (2023)
Joanne Crawford Helen McNally Helen McNally See fewer	Small Things Like These (2024)
Dearbháile McKinney Aisling Aisling See fewer	Kneecap (2024)
Nathan Braniff Tommy Foster Tommy Foster See fewer	Blue Lights (2023)
Nigel O'Neill Father Joe Father Joe See fewer	Say Nothing (2024)
Frank Blake Shane Bradley Shane Bradley See fewer	Normal People (2020)
Aoife Hughes Lindsay Singleton Lindsay Singleton See fewer	Silverpoint (2022)
Paula McFetridge Marian Marian See fewer	Five Minutes of Heaven (2009)
Brendan Quinn Sean Mulholland Sean Mulholland See fewer	Blue Lights (2023)
Michael Smiley Paul 'Colly' Collins Paul 'Colly' Collins See fewer	Kill List (2011)
Orla Mullan Róisín O'Boyle Róisín O'Boyle See fewer	Line of Duty (2012)
Patrick McBrearty John O'Boyle John O'Boyle See fewer	The Lost City of Z (2016)
Frankie McCafferty Barney Barney See fewer	Philomena (2013)
Dave Elliot Brendan Brendan See fewer	Blue Lights (2023)