Line of Duty (oubyen Enquêtes internes nan Kebèk) se yon seri televizyon britanik kreye pa Jed Mercurio ak difize depi 26 jen 2012 sou BBC Two ak nan Kanada depi 8 jiyè 2013 sou Super Channel.[1]
- Martin Compston : Steve Arnott
- Vicky McClure : Kate Fleming
- Adrian Dunbar : Ted Hastings
- Thandie Newton : Roseanne « Roz » Huntley (sezon 4)
- Craig Parkinson : Matthew « Dot » Cottan (sezon 1-3)
- Keeley Hawes : Lindsay Denton (sezon 2-3)
- Daniel Mays : Danny Waldron (sezon 3)
- Lennie James : Anthony « Tony » Gates (sezon 1)
- Aiysha Hart : Sam Railston (sezon 3-4)
- Arsher Ali : Harinderpal « Hari » Bains (sezon 3)
- Brian McCardie : Tommy Hunter (sezon 1 et 2)
- Charlotte Spencer : Carly Kirk (sezon 2)
- Christina Chong : Nicola Rogerson (sezon 2)
- Claire Keelan : Leah Janson (sezon 1)
- Claudia Jessie : Jodie Taylor (sezon 4)
- Faraz Ayub : Deepak Kapoor (sezon 1)
- Gaite Jansen : Hana Reznikova (sezon 4)
- George Costigan : Patrick Fairbank (sezon 3)
- Gina McKee : Jackie Laverty (sezon 1)
- Jason Watkins : Tim Ifield (sezon 4)
- Jessica Raine : Georgia Trotman (sezon 2)
- Jonas Armstrong : Joe Nash (sezon 3)
- Kate Ashfield : Jools Gates (sezon 1)
- Leanne Best : Jackie Brickford (sezon 3)
- Lee Ingleby : Nick Huntley (sezon 4)
- Lisa Palfrey : Enspektè McAndrew (sezon 3)
- Liz White : Jo Dwyer (sezon 2)
- Mark Stobbart : Neil Twyler (sezon 4)
- Maya Sondhi : Maneet Bindra (sezon 3 ak 4)
- Mark Bonnar : Mike Dryden (sezon 2)
- Neil Morrissey : Nigel Morton (sezon 1-3)
- Nigel Boyle : Ian Buckells (sezon 1 ak 4)
- Owen Teale : Philip Osborne (sezon 1)
- Patrick Baladi : Jimmy Lakewell (sezon 4)
- Paul Higgins : Derek Hilton (sezon 1 ak 4)
- Polly Walker : Gill Biggeloe (sezon 3)
- Royce Pierreson : Jamie Desford (sezon 4)
- Sacha Dhawan : Manish Prasad (sezon 2)
- Scott Reid : Michael Farmer (sezon 4)
- Shaun Parkes : Terry Reynolds (sezon 3)
- Steve Toussaint : Chef Mallick (sezon 2)
- Tony Pitts : Lester Hargreaves (sezon 2 ak 4)
- Will Mellor : Rod Kennedy (sezon 3)