- Gordon Kennedy - DI Eddie Rodgers
- Bhav Joshi - Gary Franklin
- Ian Hanmore - Tommy Loughran
- Benjamin Scanlan - Young Lennox
- Tam Dean Burn - Ronnie Hamil
- Ali Watt - Winterburn
- Reanne Farley - Danielle McKendrick
- Emma Hartley-Miller - Angela Hamil
- Fatima Jawara - Stella Harrington
- Derek Riddell - Richie Gulliver
- Jonathan Kerrigan - Mark McKendrick
- Ken Stott - DCS Bob Toal
- Ken Stott - DCS Robert Toal
- Ezra Faroque Khan - Graham Burt
- Forbes Masson - Baxter Mcclelland
- Amy Conachan - Karen
- Brian Bovell - George Marsden
- Réginal Kudiwu - Louis Leblanc
- Holly Woodhouse - Member of Police Committee for Scotland
- Stuart Martin - Stuart Lennox
- Ellie Haddington - Avril Lennox
- Ewan Stewart - John Lennox
- Sorcha Groundsell - Carly McCargill
- Sharon Young - Samantha Gulliver
- Ryan Hunter - Graeme Cornell
- Simon Weir - Miles Combe
- Kris Hitchen - Robert Ellis
- Ewens Abid - Georges Fournier
- Pierre Guillemin - Gustave
- John Simm - Gareth Horsborough
- John Simm - Mr Confectioner
- Rian Gordon - Teenage Lennox
- Rian Gordon - Young Lennox
- Kim Chapman - Helena
- Kayla Caldwell - Kylie
- Dani Heron - Melinda
- Suzanne Magowan - Chrissy Gillman
- Fiona Ormiston - Magda Lockhart
- Joe Cassidy - Bill Lockhart
- John Paul Hurley - DCI Ken Custer
- John Paul Hurley - Ken Custer
- Joshua Haynes - Teenage Les
- Shereen Cutkelvin - Sophie
- James Thackeray - Policeman
- Keeley Forsyth - Flora Horsburgh
- Carol Ann Crawford - Liz Burlley
- Gavin Mitchell - Les Brodie
Ian Hanmore interpreta a Tommy Loughran en la serie.
Jamie Sives interpreta a DI Dougie Gillman en la serie.
Ewan Stewart interpreta a John Lennox en la serie.
Dougray Scott interpreta a DI Ray Lennox en la serie.
Joanna Vanderham interpreta a DS Amanda Drummond en la serie.
Sarah McCardie hace el papel de DS Gillian Glover.
Laura Fraser interpreta a Sally Hart en la serie.
Capítulo disponible en las siguientes plataformas:
