A siege is underway… the gunman who took PC Gary Best's dad is now holed up in a building, and when Inspector Gina Gold finds out two elderly residents, one a diabetic in urgent need of medication, are trapped she has to decide whether to let SO19 take him by surprise. When Smithy volunteers himself as a hostage in return for the elderly couple to be released, his actions are totally against protocol, much to Inspector Gold's dismay. Smithy desperately attempts to talk the gunman down but he's dealing with a deranged man capable of anything. Will Gina Gold put her officer's life at risk by allowing SO19 to storm the building and will Gary Best ever have the chance to make amends with his father?

It's the last day of PC Polly's trial and she takes the stand to try and convince the jury of her innocence. But will she convince the packed courtroom that she did the right thing? And how will Polly's confession that she was set up by Cathy go down with her Sun Hill colleagues, especially wh

Live episode. Becker and Bradford are held hostage in the yard by a drunk wielding a knife. Becker is dragged into a carrier and Bradford escapes to get backup. Okaro takes control and orders Kent, Klein and Smith storm the van and but Becker has been stabbed, and she tragically dies in hospital. There are complications when the suspect swallows his tongue in custody. Best comes face-to-face with his father's murderer and during a rooftop tussle when Ellis escapes from an open custody door, Ellis falls to his death with Gary on top of him. Carver and Ackland reminisce over their twenty years of service together at Sun Hill when he is in hospital after being assaulted by his drunken wife, Marie. Murphy sees Taviner in the yard, and realizes he is alive. Webb returns to collect his belongings and reveals that he has transferred to the Murder Investigation Team, but has a frosty reception due to his rape by Martin Delaney, but tells his former colleagues to ignore it.