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10 Episodes 2015 - 2015
Series 18 sees the team trying to track down a sniper who has began a public crisis in London and a man who is found murdered on the tube.
Episode 1
Tue, Jan 6, 2015 50 mins
Three people are shot dead in a petrol station.
Episode 2
Wed, Jan 7, 2015 50 mins
Jane is forced to look beyond her fallout with the Chief Superintendent when three people are shot dead in a petrol station.
Episode 3
Mon, Jan 12, 2015 50 mins
Nikki and Jack investigate a man run down and killed by a tube train.
Episode 4
Tue, Jan 13, 2015 50 mins
Conclusion. Tension on the tube network threatens to boil over and security is stepped up. The accidental verdict in the first death is called into question and the witnesses are brought in for interview.
Episode 5
Mon, Jan 19, 2015 50 mins
Part 1 of 2. A suspected paedophile is found killed and soon the murder is linked to the missing child Lizzie Craddock. When he teams up with DI Gina Conroy, Jack puts pressure on Lizzie's parents to help find her.
Episode 6
Tue, Jan 20, 2015 50 mins
Conclusion. By focusing on Lizzie's movements, Jack and DI Conroy discover her last location. Meanwhile, Louise is afraid that Daniel Garvey's death can be linked to his stepson Kevin, and is forced to decide whether Ricky Mansfield is suffering abuse at home.
Episode 7
Mon, Jan 26, 2015 50 mins
Nikki and Jack must uncover why a dead hitman targeted the Russian Maksim Bazhanov, and a botched assassination attempt leaves a young nanny dead.
Episode 8
Tue, Jan 27, 2015 50 mins
A young woman is found dead in Maksim Bazhanov's home, complicating the case; Jack and Thomas believe foul play was involved in Amy's death, and Amy's mother puts pressure on the investigation.
Episode 9
Mon, Feb 2, 2015 50 mins
Sergeant Sam Honeywell is found beaten in his car in Essex, and the police are determined to find out what happened.
Episode 10
Tue, Feb 3, 2015 50 mins
Conclusion. In the Season 18 finale, Essex criminal Jason Simons is found dead, causing links to be made between his and Honeywell's murders. Meanwhile, drugs are traced on Simon's penknife and suspicions turn to Dean Fallon.