Clive has finally managed become a silk, but his celebrations come to a halt after news comes through that the son of the head of chambers has been arrested for killing a police officer. Martha has to try and defend him but the evidence against him does not look good.
Martha has to put her personal feelings aside when she has to defend a footballer accused of a pitch side assault. She soon realises her client is hiding something and has to break down his barriers to win the case against Clive. A resignation shocks the chambers.
Martha and Clive find themselves on the opposing sides of a high profile assisted suicide case as a mother is accused of helping her severely paralyzed daughter to die. Martha has to fight for her client ignoring the moral arguments surrounding the case. Billy's position becomes compromised and there's a new opening for Head of Chambers.
After an anxious solicitor shows up at Shoe Lane, Billy knows exactly who he needs. Dani’s nephew is trying to stop extradition to America on charges of terrorism and despite Clive’s warnings, Martha refuses to allow the system swallow up a young man without any real evidence.
Martha is asked to defend a friend from the past and has to put personal feelings aside as he is involved in a gangland execution. Martha and Sean's past comes back to haunt them. Billy receives a visit from a corrupt solicitor.
Martha continues to defend her ex-boyfriend despite overwhelming evidence that contradicts her case. She begins to feel more and more isolated as an angry Clive confronts her about the holes in the case. Martha soon begins to uncover the lies Sean has told her and has to turn to an old enemy to clear his name. Martha is shocked when the jury finally reveal their verdict. Billy's tribunal comes to a head.