"Negative Pressure" is the fourth episode in Series 3 of Line of Duty and the fifteenth overall episode. It was first broadcast on BBC Two on 14th April 2016.
Summary[]
Fresh testimony launches AC-12 back on the trail of the Caddy, a corrupt officer with links to organised crime. But new disturbing evidence suggests the Caddy may reside within AC-12.
Recap[]
Part I[]
- Main article: Negative Pressure Recap Part I
Part II[]
- Main article: Negative Pressure Recap Part II
Cast[]
Opening Credits[]
- Martin Compston as Detective Sergeant (DS) Steve Arnott
- Vicky McClure as Detective Constable (DC) Kate Fleming
- Adrian Dunbar as Superintendent (Supt) Ted Hastings
- Craig Parkinson as Detective Inspector (DI) Matthew Cottan
- Keeley Hawes as Detective Inspector (DI) Lindsay Denton
- Polly Walker as Gill Biggeloe
- George Costigan as Patrick Fairbank
- Neil Morrissey as DC Nigel Morton
- Arsher Ali as Police Constable (PC) Hari Bains
- Jonas Armstrong as Joe Nash
- Aiysha Hart as DS Sam Railston
Closing Credits[]
- Maya Sondhi as PC Maneet Bindra
- Melanie Kilburn as Tammy Blakefield
Uncredited[]
- Chrissie Harris as Police Officer AC-12
- Kristy Robinson as PC Karen Black
- Ross Moneypenny as AFO
- Ash Cook as Young Joe Nash
Locations[]
Filming locations in this episode include Invest Northern Ireland HQ and Belfast BT Riverside Tower (AC-12 Building).