6/8 As heroin hits the streets of Manchester, CID want culprits for the smuggling and dealing.
BBC One Wales
5/8 Sam tries to focus when a man's wife and daughter are kidnapped and held hostage.
BBC One except Channel Islands, Northern Ireland, Oxfordshire, South West, West Midlands, Yorkshire
4/8 Sam and Annie are led into a world of suburban swingers' parties to solve a murder case.
BBC One Scotland
BBC One except Scotland
3/8 The IRA have brought their mainland bombing campaign to Manchester.