Gemma discovers that Steve knows everything, so DC Hunter whisks her straight into witness protection. But as she becomes increasingly agitated, she goes into labour - and if that wasn't bad enough, a gunman has tracked her down. Meanwhile, Francesca agrees to pick up some illegal money for Paul - unaware she is being followed, Harriet makes a move with prison chaplain Ian, but things don't quite turn out as she had hoped, and Lou is reunited with Sean upon his release, fully aware she may well be behind bars herself before long.